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Freddy Barrera's user avatar
Freddy Barrera's user avatar
Freddy Barrera's user avatar
Freddy Barrera
  • Member for 7 years, 1 month
  • Last seen more than a month ago
  • Bogotá, Colombia
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1
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Computer programmer.

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33
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17
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12
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Top posts
All Questions Answers
Score Newest
answer
15
A labelling of the vertices of the Petersen graph with integers
May 21, 2017
answer
12
Tiling a square with rectangles whose areas or perimeters are 1, 2, 3, ..., N
Mar 6, 2019
answer
6
Perfect Runs of Consecutive Integers
Apr 24, 2019
question
4
Can one permute the positive integers with just the four arithmetical operations? [closed]
Feb 12, 2017
answer
2
Graceful graphs all of whose vertices are labelled with primes or squares
Jun 7, 2019
answer
2
A special type of Langford pairing
Nov 24, 2019
Top network posts
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14
Primes in a Diamond
13
Crosses and Circles
9
Playing Doublets with the Primes
7
More Crosses and Circles
6
Aces, twos, threes, and fours in a row

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