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A204326 Number of cubic graphs on 2n nodes with chromatic number 3. 0
0, 0, 1, 4, 17, 80, 496 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

The number of cubic graphs on 2n nodes with chromatic number 1 begins 0, 0, 1, 1, 2, 5, 13, ... . If we had more terms this would warrant its own entry.

LINKS

Table of n, a(n) for n=1..7.

F. C. Bussemaker, S. Cobeljic, L. M. Cvetkovic and J. J. Seidel, Computer investigations of cubic graphs, T.H.-Report 76-WSK-01, Technological University Eindhoven, Dept. Mathematics, 1976.

CROSSREFS

Cf. A002851.

Sequence in context: A056096 A257084 A245377 * A151250 A174810 A121545

Adjacent sequences:  A204323 A204324 A204325 * A204327 A204328 A204329

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jan 14 2012

STATUS

approved

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Last modified April 8 08:39 EDT 2020. Contains 333313 sequences. (Running on oeis4.)