Number of polyominoes with n cells that tile the plane isohedrally but not by translation or by 180-degree rotation (Conway criterion).
A075204
Number of polyominoes with n cells that tile the plane isohedrally but not by translation or by 180-degree rotation (Conway criterion).
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =3a(7) =22a(8) =80a(9) =323a(10) =338a(11) =3322a(12) =3178a(13) =13590a(14) =43045a(15) =76881a(16) =48781a(17) =551137a(18) =93592a(19) =2190553a(20) =3163376a(21) =3542450a(22) =1065943a(23) =39341178a(24) =31694933
External references
- oeis: A075204