A072598 a(n)= 3^(4*n-4)* sum_{k>=0} ( Gamma(n+k/3+1/3) / Gamma(4/3+k/3) ) * (Gamma(n+k/3+2/3) / Gamma(5/3+k/3) ) * (Gamma(n+k/3+1) / Gamma(2+k/3) ) * Gamma(n+k/3+4/3) / ( Gamma(7/3+k/3) * k! *exp(1)).

1, 1961, 22982765, 897960515649, 87104111341922641, 17553971396873140572281, 6522485663882405640795371581, 4101670732571144797304609148820545

Offset

1,2

Comments

Gamma in the definition is the standard Capital-Greek-Gamma function.

Links

Table of n, a(n) for n=1..8.

Crossrefs

Cf. A072019, A072020.

Sequence in context: A200857 A351680 A157627 * A159213 A056094 A253528

Adjacent sequences: A072595 A072596 A072597 * A072599 A072600 A072601

Keyword

nonn

Author

Karol A. Penson, Jun 23 2002

Status

approved