

A058495


Total number of multiple edges in all essentially parallel seriesparallel networks with n unlabeled edges, multiple edges allowed.


0




OFFSET

0,3


REFERENCES

J. W. Moon, Some enumerative results on seriesparallel networks, Annals Discrete Math., 33 (1987), 199226 (the sequence M_p(n)*p_pi).


LINKS

Table of n, a(n) for n=0..7.
Index entries for sequences mentioned in Moon (1987)


FORMULA

Reference gives g.f.


CROSSREFS

Sequence in context: A148362 A143094 A308274 * A287275 A151280 A149914
Adjacent sequences: A058492 A058493 A058494 * A058496 A058497 A058498


KEYWORD

nonn,easy,nice,more


AUTHOR

N. J. A. Sloane, Dec 20 2000


STATUS

approved



