Number of dissections of a convex (3n+3)-sided polygon into n pentagons and one triangle (up to equivalence).
A185113
Number of dissections of a convex (3n+3)-sided polygon into n pentagons and one triangle (up to equivalence).
Terms
- a(0) =1a(1) =3a(2) =18a(3) =130a(4) =1020a(5) =8379a(6) =70840a(7) =610740a(8) =5340060a(9) =47187580a(10) =420412278a(11) =3770221338a(12) =33991902308a(13) =307826695050
External references
- oeis: A185113