References to A047865

Number of derangements of n where minimal cycle size is 4.
1, 0, 0, 0, 6, 24, 120, 720, 6300, 58464, 586656, 6384960, 76471560, 994831200


2 seqfan posts

Mon Dec 14 08:28:00 CET 2009    [seqfan] Re: OEIS wiki user update
Sun Dec 13 10:37:54 CET 2009    [seqfan] Re: OEIS wiki user update

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