Coordination sequence for (2,3,7) tiling of hyperbolic plane.

Terms

a(0) =1a(1) =3a(2) =5a(3) =7a(4) =9a(5) =12a(6) =16a(7) =20a(8) =24a(9) =28a(10) =33a(11) =40a(12) =48a(13) =57a(14) =67a(15) =78a(16) =92a(17) =109a(18) =129a(19) =152a(20) =178a(21) =209a(22) =246a(23) =290a(24) =342a(25) =402a(26) =472a(27) =555a(28) =653a(29) =769