Number of free heptagonal polyforms with n cells on the heptagonal tiling of the hyperbolic plane.
A333018
Number of free heptagonal polyforms with n cells on the heptagonal tiling of the hyperbolic plane.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =10a(5) =44a(6) =249a(7) =1513a(8) =9992a(9) =68305a(10) =480748a(11) =3450793a(12) =25186583
External references
- oeis: A333018