Number of internal triangles in all triangulations of an (n+1)-gon.
A002058
Number of internal triangles in all triangulations of an (n+1)-gon.
Terms
- a(0) =2a(1) =14a(2) =72a(3) =330a(4) =1430a(5) =6006a(6) =24752a(7) =100776a(8) =406980a(9) =1634380a(10) =6537520a(11) =26075790a(12) =103791870a(13) =412506150a(14) =1637618400a(15) =6495886320a(16) =25751549340a(17) =102042235620a(18) =404225281200
External references
- oeis: A002058