A361585 Number of digraphs on n unlabeled nodes whose strongly connected components are directed cycles.

1, 0, 1, 1, 8, 28, 736, 17879, 1568614, 196581247, 62857465075, 34431266945361, 42146672798547398, 95881304594606248756, 459546334152150732106700, 4253461062245855670436620669, 80700118619568448244440535541825, 3011390106783578987361705575335328331

Offset: 0

Author

Andrew Howroyd, Mar 16 2023

Keywords

• nonn

Crossrefs

Cf. A350794, A361583, A361584 (also single vertex components).

Programs

PARI

A361585seq(16) \\ See PARI link in A350794 for program code.