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A058380
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Essentially series series-parallel networks with n labeled edges, multiple edges not allowed.
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5
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0, 0, 1, 1, 13, 66, 796, 8338, 122326, 1893748, 34717076, 695343144, 15560613872, 379211091416, 10070672083928, 288420300817184, 8877044175277216, 291944826030636000, 10221726849956763136, 379528960298122277536, 14896869800297864928736
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,5
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REFERENCES
| J. W. Moon, Some enumerative results on series-parallel networks, Annals Discrete Math., 33 (1987), 199-226 (the sequence R_n).
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LINKS
| Index entries for sequences mentioned in Moon (1987)
S. R. Finch, Series-parallel networks
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FORMULA
| E.g.f. satisfies A(x) = A058379(x) - log(1+x).
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CROSSREFS
| Cf. A058379, A058381.
Sequence in context: A147075 A109727 A041320 * A129746 A067863 A106975
Adjacent sequences: A058377 A058378 A058379 * A058381 A058382 A058383
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KEYWORD
| nonn,nice,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Dec 19 2000
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