A350798 - OEIS

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A350798

Number of unlabeled digraphs with n arcs and a global source (or sink).

1, 1, 2, 6, 21, 84, 387, 1953, 10802, 64267, 408489, 2750686, 19518841, 145236878, 1128884559, 9135566309, 76758391212, 667993213393, 6008434514996, 55755719348210, 532896254763646, 5238211003916685, 52885470406233727, 547751388283907208, 5813693205313803535, 63170000832869927871

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

OFFSET

0,3

LINKS

Table of n, a(n) for n=0..25.

PROG

(PARI) A350798seq(15) \\ See PARI link in A350794 for program code.

CROSSREFS

Column sums of A350797.

Cf. A350360, A350752, A350796, A350906, A350907.

Sequence in context: A150224 A150225 A123922 * A326276 A099947 A121726

Adjacent sequences: A350795 A350796 A350797 * A350799 A350800 A350801