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A128243 Number of n-node (unlabeled) connected graphs with girth 6. 10
0, 0, 0, 1, 1, 6, 17, 69, 239, 962, 3864, 17049, 79607, 403758, 2209386, 13138818, 84841130, 595825731 (list; graph; refs; listen; history; text; internal format)
OFFSET
3,6
LINKS
PROG
(nauty) geng -ctfq $n | countg -qg6 --ng # Martin Fuller, May 03 2015
CROSSREFS
Sequence in context: A123189 A219847 A047156 * A219294 A338747 A154494
KEYWORD
nonn,more
AUTHOR
Keith Briggs, May 05 2007
EXTENSIONS
Corrected and extended by Martin Fuller, May 01 2015
a(18)-a(20) added by Georg Grasegger, May 02 2023
STATUS
approved

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Last modified April 19 15:11 EDT 2024. Contains 371794 sequences. (Running on oeis4.)