Number of triangulations (by Euclidean triangles) having 3+3n vertices of a triangle with each side subdivided by n additional points.
A087809
Number of triangulations (by Euclidean triangles) having 3+3n vertices of a triangle with each side subdivided by n additional points.
Terms
- a(0) =1a(1) =4a(2) =29a(3) =229a(4) =1847a(5) =14974a(6) =121430a(7) =983476a(8) =7952111a(9) =64193728a(10) =517447289a(11) =4165721377a(12) =33500374796a(13) =269166095800
External references
- oeis: A087809