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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
OFFSET
0,5
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
KEYWORD
nonn
AUTHOR
Andrew Howroyd, Mar 16 2023
STATUS
approved