Number of asymmetric polyominoes with n cells.
0, 0, 0, 1, 5, 20, 84, 316, 1196, 4461, 16750, 62878, 237394, 899265, 3422111
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
by frequency
by keyword
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