Number of triangular n-ominoes on the icosahedron.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =4a(5) =9a(6) =15a(7) =33a(8) =59a(9) =120a(10) =188a(11) =278a(12) =286a(13) =230a(14) =118a(15) =53a(16) =14a(17) =5a(18) =1a(19) =1