A058479 Total number of interior nodes in all essentially parallel series-parallel networks with n labeled edges, multiple edges allowed.

0, 0, 0, 3, 32, 410, 6164, 107492, 2140368, 47990784, 1197523456, 32930028736, 989647215424, 32276598717376, 1135501305508608, 42865272243657216, 1728443263014370304, 74145986811618564608, 3371731055491925101568

Offset

0,4

References

J. W. Moon, Some enumerative results on series-parallel networks, Annals Discrete Math., 33 (1987), 199-226 (the e.g.f. I_P(x)).

Links

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

Index entries for sequences mentioned in Moon (1987)

Formula

E.g.f. = product of e.g.f.'s for A006351 and A058478.

Crossrefs

A058480 = A058478 + A058479.

Sequence in context: A300366 A231591 A123336 * A264334 A278069 A370462

Adjacent sequences: A058476 A058477 A058478 * A058480 A058481 A058482

Keyword

nonn

Author

N. J. A. Sloane, Dec 20 2000

Status

approved