Number of partial permutations of [2n] that have exactly n cycles.

A388149

Number of partial permutations of [2n] that have exactly n cycles.

Terms

    a(0) =1a(1) =3a(2) =41a(3) =965a(4) =32179a(5) =1387617a(6) =73376435a(7) =4595401239a(8) =332576767523

External references