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A104209
Number of labeled directed multigraphs with n arrows and no vertex of degree 0.
+0
8
1, 3, 39, 819, 23949, 898947, 41212155, 2232057171, 139455901101, 9873341493231, 781184921112075, 68309191570851759, 6541702440222052137, 680922615974259589527, 76544749927261960908807
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.
AT&T Labs Research
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