User Bernardo Recamán Santos

34 votes

1 answer

3k views

Tiling a square with rectangles

asked Oct 10, 2015 at 13:35

25 votes

3 answers

2k views

Splitting the integers from $1$ to $2n$ into two sets with products as close as possible

asked Mar 30, 2022 at 23:22

16 votes

3 answers

2k views

Are 0 and 1, respectively, the least and most used digits among primes?

asked Aug 16, 2023 at 19:44

16 votes

0 answers

988 views

A Combinatorial Game: the Snake and the Hunter

asked Jul 23, 2016 at 22:49

16 votes

4 answers

1k views

A labelling of the vertices of the Petersen graph with integers

asked May 19, 2017 at 3:35

15 votes

2 answers

885 views

Lattice n-gons with ordered side lengths 1,2,3,...,n

asked Apr 26, 2016 at 14:39

15 votes

1 answer

1k views

The Mompox Sequence: are all its terms different?

asked Jan 18 at 20:29

11 votes

1 answer

866 views

Is the divisibility graph of the proper divisors of n more often planar than not?

asked Nov 21, 2021 at 16:58

11 votes

1 answer

467 views

Perfect Runs of Consecutive Integers

asked Apr 24, 2019 at 14:32

10 votes

2 answers

1k views

Consecutive numbers with mutually distinct exponents in their canonical prime factorization

asked Mar 30, 2015 at 15:16

9 votes

3 answers

468 views

The diameter of a certain graph on the positive integers

asked Apr 4, 2015 at 1:52

9 votes

2 answers

598 views

Dissecting Ramanujan´s Cuboid: 1729 = 19 x 13 x 7

asked Jun 3, 2016 at 15:12

9 votes

1 answer

250 views

Finding the largest number which cannot be the sum of the labels of the Petersen graph

asked Jun 5, 2017 at 1:27

9 votes

2 answers

1k views

A property of 47 with respect to partitions into five parts

asked Dec 22, 2017 at 19:24

9 votes

2 answers

563 views

Splitting integers 1, 2, 3, … n to avoid least possible sum

asked Oct 21, 2014 at 15:51

9 votes

1 answer

351 views

A Combinatorial Game with Integer Sequences

asked Feb 3, 2017 at 2:17

8 votes

4 answers

595 views

Covering the primes with pairs of consecutive integers

asked Apr 9, 2019 at 12:31

8 votes

0 answers

348 views

Coprime matching of an integer's d(n) divisors with the set of the first d(n) integers

asked Feb 8, 2022 at 15:00

7 votes

3 answers

981 views

Tiling a square with rectangles whose areas or perimeters are 1, 2, 3, ..., N

asked Mar 5, 2019 at 0:42

7 votes

0 answers

546 views

Is every integer greater than 1 the sum of a palindrome and a prime?

asked Sep 22, 2016 at 19:42

6 votes

3 answers

393 views

Strings of consecutive integers divisible by 1, 2, 3, ..., N

asked Mar 29, 2019 at 11:58

6 votes

6 answers

1k views

Least number of vertices in a graph with which one can uniquely recover some partition of N

asked Mar 27, 2018 at 23:35

6 votes

1 answer

438 views

The largest digital sum of the square of an n-digit number

asked Oct 10, 2021 at 22:47

6 votes

1 answer

240 views

On the growth and bounds for a certain sequence of integers known as Bogotá numbers

asked Jun 12, 2020 at 14:41

6 votes

1 answer

416 views

Ramsey's number R(4,4) with arithmetic progressions

asked Jul 27, 2020 at 16:12

5 votes

2 answers

310 views

Pairs of integers whose product is one more or less than a prime

asked May 22, 2020 at 14:43

5 votes

1 answer

250 views

Dealing cards numbered $1$ to $n$ into piles

asked Feb 5, 2021 at 22:54

5 votes

0 answers

157 views

Tiling rectangles using all squares of sides 1, 2, 3, ..., n

asked May 23, 2019 at 13:55

5 votes

1 answer

735 views

Numbers divisible by precisely the same set of primes

asked Sep 5, 2019 at 2:03

5 votes

1 answer

792 views

Packing circles with radii 1, 2, 3, ..., n in a rectangle

asked Jan 25, 2020 at 15:40

Stack Exchange Network

51 Questions

Tiling a square with rectangles

Splitting the integers from $1$ to $2n$ into two sets with products as close as possible

Are 0 and 1, respectively, the least and most used digits among primes?

A Combinatorial Game: the Snake and the Hunter

A labelling of the vertices of the Petersen graph with integers

Lattice n-gons with ordered side lengths 1,2,3,...,n

The Mompox Sequence: are all its terms different?

Is the divisibility graph of the proper divisors of n more often planar than not?

Perfect Runs of Consecutive Integers

Consecutive numbers with mutually distinct exponents in their canonical prime factorization

The diameter of a certain graph on the positive integers

Dissecting Ramanujan´s Cuboid: 1729 = 19 x 13 x 7

Finding the largest number which cannot be the sum of the labels of the Petersen graph

A property of 47 with respect to partitions into five parts

Splitting integers 1, 2, 3, … n to avoid least possible sum

A Combinatorial Game with Integer Sequences

Covering the primes with pairs of consecutive integers

Coprime matching of an integer's d(n) divisors with the set of the first d(n) integers

Tiling a square with rectangles whose areas or perimeters are 1, 2, 3, ..., N

Is every integer greater than 1 the sum of a palindrome and a prime?

Strings of consecutive integers divisible by 1, 2, 3, ..., N

Least number of vertices in a graph with which one can uniquely recover some partition of N

The largest digital sum of the square of an n-digit number

On the growth and bounds for a certain sequence of integers known as Bogotá numbers

Ramsey's number R(4,4) with arithmetic progressions

Pairs of integers whose product is one more or less than a prime

Dealing cards numbered $1$ to $n$ into piles

Tiling rectangles using all squares of sides 1, 2, 3, ..., n

Numbers divisible by precisely the same set of primes

Packing circles with radii 1, 2, 3, ..., n in a rectangle