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A059282 Number of symmetric trivalent (or cubic) connected graphs on 2n nodes (the Foster census). 1
0, 1, 1, 1, 1, 0, 1, 1, 1, 2, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 3, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 2, 2, 2, 1, 1, 0, 1, 1, 3, 1, 0, 0, 2, 1, 0, 1, 2, 0, 0, 1, 0, 0, 0, 0, 2, 1, 0, 1, 1, 0, 0, 1, 0, 3, 0, 0, 6, 0, 0, 0, 0, 0, 0, 4, 0, 1, 0, 0, 3, 1, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,10

REFERENCES

I. Z. Bouwer, W. W. Chernoff, B. Monson and Z. Star, The Foster Census (Charles Babbage Research Centre, 1988), ISBN 0-919611-19-2.

LINKS

Table of n, a(n) for n=1..99.

Gordon Royle et al., Cubic symmetric graphs (The Foster Census)

Eric Weisstein's World of Mathematics, Symmetric Cubic Graph

EXAMPLE

The first example is K_4 with 4 nodes, thus a(2) = 1.

CROSSREFS

Cf. A005638, A002851, A032355.

Sequence in context: A125184 A236575 A091430 * A114591 A161849 A056175

Adjacent sequences:  A059279 A059280 A059281 * A059283 A059284 A059285

KEYWORD

nonn,nice

AUTHOR

N. J. A. Sloane, Jan 24 2001

STATUS

approved

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Last modified April 17 20:01 EDT 2014. Contains 240655 sequences.