%I #6 Oct 10 2022 04:34:04
%S 1,0,0,1,1,0,0,0,2,0,0,1,2,0,0,1,3,0,0,1,5,0,0,2,8,0,0,2,13,0,0,3,20,
%T 0,0,5,33,0,0,6,55,0,0,10,93,0,0,13,157,0,0,22,268,0,0,30,461,0,0,51,
%U 801,0,0,71,1396,0,0,124,2459,0,0,175,4329,0,0,317,7696
%N Number of polyominoes with n cells that have the symmetry group D_8 and are without holes.
%Y Cf. A000104, A142886.
%K nonn
%O 1,9
%A _John Mason_, Oct 10 2022