Number of symmetric polyominoes in {4,5} tessellation of the hyperbolic plane.
A390192
Number of symmetric polyominoes in {4,5} tessellation of the hyperbolic plane.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =8a(5) =16a(6) =35a(7) =71a(8) =159a(9) =331a(10) =747a(11) =1583a(12) =3624a(13) =7806a(14) =18019a(15) =39326a(16) =91428a(17) =201690a(18) =471680a(19) =1049635
External references
- oeis: A390192