Number of n X n binary matrices M such that M^2 is also a binary matrix.
2, 11, 172, 6327, 474286, 67147431, 1708003850
3 seqfan posts
Tue Jun 19 09:32:37 CEST 2012 [seqfan] Re: nXn Binary Matrices Squared Still Binary
Mon Jun 18 03:40:02 CEST 2012 [seqfan] nXn Binary Matrices Squared Still Binary
Sun Jun 17 13:39:57 CEST 2012 [seqfan] nXn Binary Matrices Squared Still Binary
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