A361585 - OEIS

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A361585

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

2

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

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,5

LINKS

Table of n, a(n) for n=0..17.

PROG

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

CROSSREFS

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

Sequence in context: A146977 A374138 A068623 * A297885 A298290 A298490

Adjacent sequences: A361582 A361583 A361584 * A361586 A361587 A361588

KEYWORD

nonn

AUTHOR

Andrew Howroyd, Mar 16 2023

STATUS

approved