Hankel transform of sum{k=0..n, C(2k,k)*2^k}.

A120581

Hankel transform of sum{k=0..n, C(2k,k)*2^k}.

Terms

    a(0) =1a(1) =4a(2) =-64a(3) =-28672a(4) =-17825792a(5) =-24696061952

External references