Sum of squares of coefficients in full expansion of (z1+z2+...+zn)^n.

A033935

Sum of squares of coefficients in full expansion of (z1+z2+...+zn)^n.

Terms

    a(0) =1a(1) =1a(2) =6a(3) =93a(4) =2716a(5) =127905a(6) =8848236a(7) =844691407a(8) =106391894904

External references