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A138352
Table read by antidiagonals: T(n,k) is the number of transitive directed multigraphs with loops with n arcs and k vertices.
2
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
OFFSET
0,8
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).
CROSSREFS
Cf. A138107.
Sequence in context: A114503 A103528 A277239 * A129620 A074766 A138107
KEYWORD
nonn,tabl
AUTHOR
Benoit Jubin, May 07 2008
STATUS
approved