Number of diagonally symmetric polyominoes with n cells.
0, 0, 1, 0, 2, 2, 7, 5, 26, 22, 91, 79, 326, 301, 1186, 1117, 4352, 4212, 16119, 15849
2 seqfan posts
Tue Dec 30 04:14:31 CET 2008 [seqfan] Re: Two-fold symmetry sequence
Mon Dec 29 23:33:49 CET 2008 [seqfan] Re: Two-fold symmetry sequence
Index of A-numbers in seqfan: by ascending order
by month
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