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A003515
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Number of series-reduced connected labeled graphs with n nodes.
(Formerly M4009)
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0
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0, 1, 1, 0, 5, 51, 3634, 374119, 73161880, 26545249985, 17904840957826, 22602069719494379, 53938847227326533032, 246107945479472758874483, 2170331943503938546383205218
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,5
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REFERENCES
| D. M. Jackson and J. W. Reilly, The enumeration of homeomorphically irreducible labeled graphs, J. Combin. Theory, B 19 (1975), 272-286.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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CROSSREFS
| Sequence in context: A124559 A172403 A022516 * A022501 A134097 A067282
Adjacent sequences: A003512 A003513 A003514 * A003516 A003517 A003518
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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