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A058488 Total number of interior nodes in all essentially parallel series-parallel networks with n unlabeled edges, multiple edges not allowed. +0
1
0, 0, 1, 4, 10, 30, 78, 217 (list; graph; listen)
OFFSET

0,4

REFERENCES

J. W. Moon, Some enumerative results on series-parallel networks, Annals Discrete Math., 33 (1987), 199-226 (the sequence I_q(n)*q_pi).

LINKS

Index entries for sequences mentioned in Moon (1987)

FORMULA

Reference gives g.f.

CROSSREFS

Adjacent sequences: A058485 A058486 A058487 this_sequence A058489 A058490 A058491

Sequence in context: A002220 A090578 A007713 this_sequence A036674 A006357 A047088

KEYWORD

nonn,easy,nice,more

AUTHOR

njas, Dec 20 2000

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Last modified October 13 09:05 EDT 2008. Contains 145008 sequences.


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