Partial sums of binomials bin(3n,n)^2/(2n+1).

A188682

Partial sums of binomials bin(3n,n)^2/(2n+1).

Terms

    a(0) =1a(1) =4a(2) =49a(3) =1057a(4) =28282a(5) =848101a(6) =27357493a(7) =928760053a(8) =32747441926

External references