References to A000316

Number of permutations with no hits on 2 main diagonals.
0, 4, 80, 4752, 440192, 59245120, 10930514688, 2649865335040

1 seqfan posts

Fri Oct 29 05:35:16 CEST 2010    [seqfan] Implementing first 500 sequences in Java
Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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