0,2

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

Cf. A126454, A126456; A126446, A126451, A126458.

Sequence in context: A117820 A126453 A007081 this_sequence A136466 A114735 A139289

Adjacent sequences: A126452 A126453 A126454 this_sequence A126456 A126457 A126458

nonn

Paul D. Hanna (pauldhanna(AT)juno.com), Dec 27 2006