%I #6 Jan 08 2023 13:03:16
%S 2,2,2,3,8,16,47,132,435,1445,5103,18259,66934,247826,928137,3500559,
%T 13290552,50712016,194358380,747624825,2885120934,11164896416,
%U 43313276948,168400053019,656028153120,2560227845391,10007858038797,39178672900385,153586295761270,602842558581537,2368994981198048
%N Number of nominoes plus number of niamonds.
%C Number of polyominoes with n cells plus number of polyiamonds with n cells. Turning over is allowed; holes are allowed.
%F a(n) = A000105(n) + A000577(n).
%Y Cf. A000105, A000577.
%K nonn
%O 0,1
%A _Jonathan Vos Post_, May 28 2006
%E More terms from _John Mason_, Jan 08 2023
