Define G(x) = Sum_{n>=0} a(n)*x^n/2^[n*(n-1) - A000120(n)], then [x^n] G(x)^(1/2^n) = 1 for n>=0, where A000120(n) = number of 1's in binary expansion of n.

A134096

Define G(x) = Sum_{n>=0} a(n)*x^n/2^[n*(n-1) - A000120(n)], then [x^n] G(x)^(1/2^n) = 1 for n>=0, where A000120(n) = number of 1's in binary expansion of n.

Terms

    a(0) =1a(1) =2a(2) =11a(3) =247a(4) =87453a(5) =30392377a(6) =83081803051

External references