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A047865
Number of derangements of n where minimal cycle size is 4.
+0
4
1, 0, 0, 0, 6, 24, 120, 720, 6300, 58464, 586656, 6384960, 76471560, 994831200, 13939507296, 209097854784, 3345235180560, 56866395720960, 1023601917024000, 19448577603454464, 388972171805410656, 8168409582839579520
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 4 08:07 EST 2009. Contains 170310 sequences.
AT&T Labs Research
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