A273438 Number of endofunctions on [n] with exactly seven cycles.

1, 84, 4830, 243390, 11717013, 560544138, 27196758875, 1353285904971, 69495472079033, 3696068344472504, 203958595104203576, 11687491140975605592, 695597351310503327386, 42988755956609918306640, 2757417607812192585058358, 183451189952939198906121968

Offset: 7

Author

Alois P. Heinz, May 22 2016

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 7..386

Crossrefs

Column k=7 of A060281.

Formula

E.g.f.: -1/7! * log(1+LambertW(-x))^7.