The number of partitions of {1..5n} that are invariant under a permutation consisting of n 5-cycles.

A036075

The number of partitions of {1..5n} that are invariant under a permutation consisting of n 5-cycles.

Terms

    a(0) =1a(1) =2a(2) =10a(3) =70a(4) =602a(5) =6078a(6) =70402a(7) =917830a(8) =13253002a(9) =209350350a(10) =3584098770a(11) =66012131222

External references