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A139628 Row sums of A139623, number of directed multigraphs with loops and no vertex of degree 0, with n arcs, which are transitive (the existence of a path between two points implies the existence of an arc between those two points). +0
5
1, 2, 9, 33 (list; graph; listen)
OFFSET

0,2

CROSSREFS

Cf. A139629, A139630.

Sequence in context: A110376 A036505 A056916 this_sequence A123142 A122097 A073400

Adjacent sequences: A139625 A139626 A139627 this_sequence A139629 A139630 A139631

KEYWORD

more,nonn

AUTHOR

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

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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