Number of n X n permutation matrices in which the sums of the entries of each NorthEast-SouthWest diagonal are 0 or 1.
1, 1, 3, 7, 23, 83, 405, 2113, 12657, 82297, 596483, 4698655, 40071743, 367854835
4 seqfan posts
Wed Jan 6 13:00:04 CET 2010 [seqfan] Re: Number Of Such Permutations
Tue Jan 5 21:38:47 CET 2010 [seqfan] Re: Number Of Such Permutations
Tue Jan 5 17:46:43 CET 2010 [seqfan] Re: Number Of Such Permutations
Tue Jan 5 17:46:43 CET 2010 [seqfan] Re: Number Of Such Permutations
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