a(n)/2^(n^2) is the coefficient of x^n/n! in F(x)^(1/2^n) where F(x) is the e.g.f. of A159315.
A159317
a(n)/2^(n^2) is the coefficient of x^n/n! in F(x)^(1/2^n) where F(x) is the e.g.f. of A159315.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =217a(4) =81761a(5) =240072001
External references
- oeis: A159317