1/3 of the number of colorings of an n X n square array with 3 colors.
1, 6, 82, 2604, 193662, 33865632, 13956665236, 13574876544396
4 seqfan posts
Sun Nov 2 14:46:58 CET 2008 [seqfan] Re: n x n matrices with adjacent entries differing by +/- 1
Sun Nov 2 04:22:27 CET 2008 [seqfan] Re: n x n matrices with adjacent entries differing by +/- 1
Sun Nov 2 04:14:18 CET 2008 [seqfan] Re: n x n matrices with adjacent entries differing by +/- 1
Sun Nov 2 02:54:37 CET 2008 [seqfan] Re: n x n matrices with adjacent entries differing by +/- 1
Index of A-numbers in seqfan: by ascending order
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