Timeline for Can we color Z^+ with n colors such that a, 2a, ..., na all have different colors for all a?
Current License: CC BY-SA 3.0
5 events
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| Apr 13, 2017 at 12:58 | history | edited | CommunityBot |
replaced http://mathoverflow.net/ with https://mathoverflow.net/
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| Jan 19, 2012 at 23:28 | comment | added | Andrés E. Caicedo | The sequence of groupless numbers has now been added to OEIS: oeis.org/A204811 | |
| Jan 13, 2012 at 4:16 | comment | added | Mariano Suárez-Álvarez | Cool! ${}{}{}{}$ | |
| Jan 13, 2012 at 2:16 | history | edited | Andrés E. Caicedo | CC BY-SA 3.0 |
added 3 characters in body
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| Jan 12, 2012 at 22:53 | history | answered | Andrés E. Caicedo | CC BY-SA 3.0 |