Column 1 of triangle A126457; a(n) = C( C(n+3,3) + 2, n).
A126459
Column 1 of triangle A126457; a(n) = C( C(n+3,3) + 2, n).
Terms
- a(0) =1a(1) =6a(2) =66a(3) =1540a(4) =66045a(5) =4582116a(6) =470155077a(7) =66983637864
External references
- oeis: A126459