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A001575 Colored series-parallel networks.
(Formerly M4567 N1944)
0
0, 0, 8, 102, 948, 7900, 62928, 491832 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

REFERENCES

J. Riordan, An Introduction to Combinatorial Analysis, Wiley, 1958, p. 159.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=1..8.

CROSSREFS

Sequence in context: A318551 A307461 A318213 * A328061 A305603 A297069

Adjacent sequences:  A001572 A001573 A001574 * A001576 A001577 A001578

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified December 9 19:51 EST 2019. Contains 329879 sequences. (Running on oeis4.)