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A139627 Row sums of A139622, number of strongly connected directed multigraphs with loops and no vertex of degree 0, with n arcs. +0
4
1, 1, 2, 4 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Cf. A052171, A139626.

Sequence in context: A038537 A120313 A082871 this_sequence A166926 A028573 A138758

Adjacent sequences: A139624 A139625 A139626 this_sequence A139628 A139629 A139630

KEYWORD

more,nonn

AUTHOR

Benoit Jubin (benoit_jubin(AT)yahoo.fr), May 01 2008

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

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