Number of permutations of [n] having exactly four nontrivial cycles.

A289952

Number of permutations of [n] having exactly four nontrivial cycles.

Terms

    a(0) =105a(1) =3465a(2) =74025a(3) =1346345a(4) =23079595a(5) =391180075a(6) =6719395683a(7) =118538975555

External references