G.f.: A(x) = exp( Sum_{n>=1} 2^(n^2)/(1 - 2^n*x)^n * x^n/n ).
A156910
G.f.: A(x) = exp( Sum_{n>=1} 2^(n^2)/(1 - 2^n*x)^n * x^n/n ).
Terms
- a(0) =1a(1) =2a(2) =14a(3) =268a(4) =21462a(5) =7872396a(6) =12585797612
External references
- oeis: A156910
A156910
G.f.: A(x) = exp( Sum_{n>=1} 2^(n^2)/(1 - 2^n*x)^n * x^n/n ).