a(n) is the number of n-celled polyominoes with holes in the {4,5} tessellation of the hyperbolic plane.

A390197

a(n) is the number of n-celled polyominoes with holes in the {4,5} tessellation of the hyperbolic plane.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =1a(10) =9a(11) =107a(12) =928a(13) =7426a(14) =54199a(15) =375332

External references