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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
OFFSET
3,6
PROG
(nauty) geng -ctfq $n | countg -qg6 --ng # Martin Fuller, May 03 2015
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