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A128238
Number of n-node (unlabeled) graphs with girth 5.
3
0, 0, 1, 2, 8, 26, 101, 396, 1744, 8531, 47803, 308086, 2300756, 19909540, 199365557
OFFSET
3,4
PROG
(nauty) geng -tfq $n | countg -qg5 --ng # Martin Fuller, May 03 2015
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Keith Briggs, May 05 2007
EXTENSIONS
Corrected and extended by Martin Fuller, May 01 2015
STATUS
approved