A350751 Number of unlabeled strongly connected oriented graphs with n arcs.

1, 0, 0, 1, 1, 3, 7, 27, 120, 590, 3172, 18291, 112597, 731646, 5002261, 35805035, 267427870, 2077890719, 16753007782, 139843832074, 1206213748404, 10731971520412, 98340872850392, 926788397662602, 8971598464914888, 89105060389927172, 907030917078092542

Offset

0,6

Links

Table of n, a(n) for n=0..26.

Prog

(PARI) A350751seq(20) \\ See PARI link in A350489 for program code.

Crossrefs

Column sums of A350750.

Cf. A350489, A350752.

Sequence in context: A246313 A003083 A347639 * A062795 A062363 A333362

Adjacent sequences: A350748 A350749 A350750 * A350752 A350753 A350754

Keyword

nonn

Author

Andrew Howroyd, Jan 14 2022

Status

approved