%I #14 Oct 05 2023 08:37:46
%S 1,2,4,8,17,41,100,267,772,2442,8512,33076,143430,697037,3791763,
%T 23043296,155896190,1169641637,9693805936
%N Number of unlabeled graphs on n vertices without 4-cycles or 5-cycles.
%C Disconnected graphs are included.
%Y Cf. A366223 (biconnected graphs in the same class).
%K nonn,hard,more
%O 1,2
%A _Brendan McKay_, Oct 04 2023