For n >= 1, a(n) is the number of permutations in the symmetric group S_n such that their cycle decomposition contains no 6-cycle.

A060726

For n >= 1, a(n) is the number of permutations in the symmetric group S_n such that their cycle decomposition contains no 6-cycle.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =120a(6) =600a(7) =4200a(8) =33600a(9) =302400a(10) =3024000a(11) =33264000a(12) =405820800a(13) =5275670400a(14) =73859385600

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