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A139630 Row sums of A139625, number of strongly connected 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, 1, 1, 1, 2, 3, 7, 11, 20, 30, 47, 71, 117, 201, 369, 703, 1323, 2463, 4446 (list; graph; listen)
OFFSET

0,5

CROSSREFS

Cf. A139628, A139629.

Sequence in context: A003173 A159262 A160434 this_sequence A133044 A014529 A095015

Adjacent sequences: A139627 A139628 A139629 this_sequence A139631 A139632 A139633

KEYWORD

nonn

AUTHOR

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

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.


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