G.f.: A(x) = exp( Sum_{n>=1} A000172(n)^3*x^n/n ) where Franel number A000172(n) = Sum_{k=0..n} C(n,k)^3.
A216353
G.f.: A(x) = exp( Sum_{n>=1} A000172(n)^3*x^n/n ) where Franel number A000172(n) = Sum_{k=0..n} C(n,k)^3.
Terms
- a(0) =1a(1) =8a(2) =532a(3) =62624a(4) =10964914a(5) =2399234384a(6) =609215149096
External references
- oeis: A216353