410572800
domain: N
Appears in sequences
- For n >= 1 a(n) is the number of permutations in the symmetric group S_n such that their cycle decomposition contains no 7-cycle.at n=12A060727
- Number of leading odd entries in all permutations of {1,2,...,n} (see example).at n=11A152663
- Number of leading even entries in all permutations of {1,2,...,n}.at n=11A152665
- Number of permutations on n points admitting a seventh root.at n=12A215718
- E.g.f. satisfies: A(x) = Integral 1 + A(x)^6 dx.at n=2A258927
- a(n) = (n+1)*(2*n+2)!/(n+2).at n=5A274136