Coordination sequence for (3,4,4) tiling of hyperbolic plane.

Terms

a(0) =1a(1) =3a(2) =6a(3) =11a(4) =18a(5) =29a(6) =46a(7) =73a(8) =116a(9) =183a(10) =290a(11) =459a(12) =726a(13) =1149a(14) =1818a(15) =2877a(16) =4552a(17) =7203a(18) =11398a(19) =18035a(20) =28538a(21) =45157a(22) =71454a(23) =113065a(24) =178908a(25) =283095a(26) =447954a(27) =708819a(28) =1121598a(29) =1774757