References to A000387

Rencontres numbers: permutations with exactly two fixed points.
1, 0, 6, 20, 135, 924, 7420, 66744, 667485, 7342280, 88107426, 1145396460

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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