A126452 Column 1 of triangle A126450; a(n) = C( C(n+3,3), n).

1, 4, 45, 1140, 52360, 3819816, 406481544, 59487568920, 11468588169060, 2818651865383860, 860587163078645431, 319667046321630491484, 141992594868360194121800, 74339194732961502662043600

Offset

0,2

Links

Table of n, a(n) for n=0..13.

Mathematica

Table[Binomial[Binomial[n+3, 3], n], {n, 0, 20}] (* Harvey P. Dale, Oct 09 2014 *)

Prog

(PARI) a(n)=binomial((n+1)*(n+2)*(n+3)/3!, n)

Crossrefs

Cf. A126450; A126451, A126453; A126447, A126456, A126459.

Sequence in context: A276292 A174484 A158887 * A082765 A132873 A244753

Adjacent sequences: A126449 A126450 A126451 * A126453 A126454 A126455

Keyword

nonn

Author

Paul D. Hanna, Dec 27 2006

Status

approved