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Number of unlabeled 2-connected simple graphs with girth at least 6.
0

%I #7 Jun 14 2021 10:02:35

%S 1,1,2,3,8,17,55,166,675,2977,15553,90159,586769,4197170,32919812,

%T 281235872,2609796620

%N Number of unlabeled 2-connected simple graphs with girth at least 6.

%C The girth is the length of the shortest cycle, so girth at least 6 means there are no cycles of length 3, 4 or 5.

%Y A345246 for girth at least 4.

%Y A140440 for girth at least 5.

%K nonn,more

%O 6,3

%A _Brendan McKay_, Jun 14 2021