%I #11 Jan 15 2023 01:45:09
%S 1,2,4,11,26,80,251,929,3727,17565,95428,629795,5171063,55857762,
%T 831428458,17625946914
%N Number of simple graphs on n nodes with no cycle of length 5.
%C EULER transformation of A241784.
%Y Cf. A241784.
%K nonn,more
%O 1,2
%A _Brendan McKay_, Jun 10 2021