Number of polyiamonds with 2n cells that tile the plane both by translation and by 180-degree rotation (Conway criterion).
A075218
Number of polyiamonds with 2n cells that tile the plane both by translation and by 180-degree rotation (Conway criterion).
Terms
- a(0) =1a(1) =2a(2) =8a(3) =24a(4) =61a(5) =269a(6) =501a(7) =2121a(8) =4709a(9) =14978a(10) =26675a(11) =123081a(12) =179707a(13) =660366a(14) =1479114
External references
- oeis: A075218