A350490 - OEIS

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A350490

Number of unlabeled acyclic digraphs with n arcs and a global source.

3

1, 1, 2, 5, 15, 50, 191, 795, 3625, 17781, 93319, 519732, 3056185, 18880345, 122066437, 823118881, 5772473719, 41995743085, 316258151517, 2460542117337, 19743544526463, 163138014893817, 1386173917051704, 12096681529032989, 108293699332498981

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

OFFSET

0,3

LINKS

Andrew Howroyd, Table of n, a(n) for n = 0..40

PROG

(PARI) A350490seq(20) \\ See PARI link in A122078 for program code.

CROSSREFS

Column sums of A350488.

Cf. A122078, A350415, A350451, A350492.

Sequence in context: A374552 A306836 A192634 * A304386 A140639 A149953

Adjacent sequences: A350487 A350488 A350489 * A350491 A350492 A350493

KEYWORD

nonn

AUTHOR

Andrew Howroyd, Jan 08 2022

STATUS

approved