Numerators of sum (1/3)^((k^2+3k)/2) from k=1 to n.

A178187

Numerators of sum (1/3)^((k^2+3k)/2) from k=1 to n.

Terms

    a(0) =1a(1) =28a(2) =2269a(3) =551368a(4) =401947273a(5) =879058686052

External references