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A138352
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Table read by antidiagonals: T(n,k) is the number of transitive directed multigraphs with loops with n arcs and k vertices.
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2
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1, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 2, 5, 1, 0, 1, 2, 8, 8, 1, 0, 1, 2, 9, 20, 14, 1, 0, 1, 2, 9, 29
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,8
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COMMENTS
| Partial sums of the rows of A139623, i.e., T(n,k) = sum(T139623(n,p),p=0..k).
If k>=2n, T(n,k) = A139628(n).
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CROSSREFS
| Cf. A138107.
Sequence in context: A145895 A114503 A103528 * A129620 A074766 A138107
Adjacent sequences: A138349 A138350 A138351 * A138353 A138354 A138355
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KEYWORD
| nonn,tabl
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AUTHOR
| Benoit Jubin (benoit_jubin(AT)yahoo.fr), May 07 2008
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