a(n) is the number of n-celled snake polyominoes in the {4,5} tessellation of the hyperbolic plane.
A390196
a(n) is the number of n-celled snake polyominoes in the {4,5} tessellation of the hyperbolic plane.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =22a(6) =58a(7) =154a(8) =424a(9) =1173a(10) =3288a(11) =9230a(12) =26038a(13) =73494a(14) =207797a(15) =587635a(16) =1662805a(17) =4705491a(18) =13318682a(19) =37698858
External references
- oeis: A390196