G.f.: A(x) = 1+x*(1+x*(1+x*(...(1+x*(...)^(5^n) )...)^125)^25)^5.
A184577
G.f.: A(x) = 1+x*(1+x*(1+x*(...(1+x*(...)^(5^n) )...)^125)^25)^5.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =135a(4) =17635a(5) =11196380a(6) =35146865626
External references
- oeis: A184577