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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)
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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