1,2
Also the number of connected multigraphs on n edges. - Gordon Royle, Mar 09 2005.
N. J. A. Sloane, Transforms
Cf. A050535, A076865-A076867.
Sequence in context: A032124 A000669 A004114 this_sequence A032292 A151408 A121956
Adjacent sequences: A076861 A076862 A076863 this_sequence A076865 A076866 A076867
nonn,more,easy
N. J. A. Sloane (njas(AT)research.att.com), Nov 23 2002
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