References to A158411

Maximum number of colors required to paint a map having n regions.
0, 1, 2, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4

1 seqfan posts

Sun Nov 29 12:35:43 CET 2009    [seqfan] A008486 and the four color theorem
Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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