E.g.f: Sum_{n>=0} 3^(n^2) * exp(-2*3^n*x) * x^n/n!.
A202991
E.g.f: Sum_{n>=0} 3^(n^2) * exp(-2*3^n*x) * x^n/n!.
Terms
- a(0) =1a(1) =1a(2) =49a(3) =15625a(4) =38950081a(5) =812990017201
External references
- oeis: A202991
A202991
E.g.f: Sum_{n>=0} 3^(n^2) * exp(-2*3^n*x) * x^n/n!.