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Number of n-node (unlabeled) graphs with girth 5.
3

%I #17 Jun 24 2023 13:41:51

%S 0,0,1,2,8,26,101,396,1744,8531,47803,308086,2300756,19909540,

%T 199365557

%N Number of n-node (unlabeled) graphs with girth 5.

%o (nauty) geng -tfq $n | countg -qg5 --ng # _Martin Fuller_, May 03 2015

%Y Cf. A128041, A128042, A128236-A128243.

%K nonn,more

%O 3,4

%A _Keith Briggs_, May 05 2007

%E Corrected and extended by _Martin Fuller_, May 01 2015