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A129417 Number of isomorphism classes of connected 4-regular loopless multigraphs of order n. 9
1, 0, 1, 1, 3, 6, 19, 50, 204, 832, 4330, 25227, 171886, 1303725, 10959478, 100230117, 989280132, 10455393155 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

COMMENTS

Computed using software at http://users.cecs.anu.edu.au/~bdm/nauty/

LINKS

Table of n, a(n) for n=0..17.

PROG

(nauty/bash) geng -c -d1 ${n} -q | multig -r4 -u # Natan Arie' Consigli, Jun 05 2017

CROSSREFS

Cf. A129418, A085549, A000421, A129419, A129421, A129423, A129425.

Sequence in context: A148568 A003162 A179277 * A132335 A148569 A024998

Adjacent sequences:  A129414 A129415 A129416 * A129418 A129419 A129420

KEYWORD

nonn,more

AUTHOR

Brendan McKay, Apr 15 2007

EXTENSIONS

a(0)-a(1) prepended by Natan Arie' Consigli, Jun 05 2017

STATUS

approved

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Last modified October 21 02:41 EDT 2018. Contains 316405 sequences. (Running on oeis4.)