Column 1 of triangle A126445; a(n) = C( C(n+3,3) - 1, n).
A126447
Column 1 of triangle A126445; a(n) = C( C(n+3,3) - 1, n).
Terms
- a(0) =1a(1) =3a(2) =36a(3) =969a(4) =46376a(5) =3478761a(6) =377447148a(7) =56017460733
External references
- oeis: A126447