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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
OFFSET
0,3
LINKS
PROG
(PARI) A350490seq(20) \\ See PARI link in A122078 for program code.
CROSSREFS
Column sums of A350488.
Sequence in context: A374552 A306836 A192634 * A304386 A140639 A149953
KEYWORD
nonn
AUTHOR
Andrew Howroyd, Jan 08 2022
STATUS
approved