A058480 - OEIS

A058480

Total number of interior nodes in all series-parallel networks with n labeled edges, multiple edges allowed.

0, 0, 1, 8, 78, 944, 13760, 235248, 4620224, 102551296, 2539240416, 69398978560, 2075328010624, 67408188246528, 2363279141726464, 88952164594807808, 3577709564478865920, 153136329382704201728, 6950244396227548178432

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OFFSET

0,4

REFERENCES

J. W. Moon, Some enumerative results on series-parallel networks, Annals Discrete Math., 33 (1987), 199-226.

LINKS

Table of n, a(n) for n=0..18.

Index entries for sequences mentioned in Moon (1987)

CROSSREFS

A058480 = A058478 + A058479.

Sequence in context: A111533 A218499 A132164 * A000435 A052698 A052603

Adjacent sequences: A058477 A058478 A058479 * A058481 A058482 A058483

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Dec 20 2000

STATUS

approved