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A058494
Total number of interior nodes in all essentially parallel series-parallel networks with n unlabeled edges, multiple edges allowed.
2
0, 0, 1, 6, 20, 74, 245, 845
(list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
REFERENCES
J. W. Moon, Some enumerative results on series-parallel networks, Annals Discrete Math., 33 (1987), 199-226 (the sequence I_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
Cf. A058488, A058495.
Sequence in context: A028402 A092760 A240043 * A147979 A330245 A118265
Adjacent sequences: A058491 A058492 A058493 * A058495 A058496 A058497
KEYWORD
nonn,nice,more
AUTHOR
N. J. A. Sloane, Dec 20 2000
STATUS
approved

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Last modified November 14 21:33 EST 2024. Contains 377732 sequences.
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