Number of polyominoes with n cells that do not tile the plane.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =4a(7) =26a(8) =235a(9) =1585a(10) =10453a(11) =40151a(12) =199922a(13) =792867a(14) =3146993a(15) =12532362a(16) =49280874a(17) =189564720a(18) =739243108a(19) =2858545267a(20) =11101139486a(21) =43154849550a(22) =167993679964a(23) =654778791594