G.f.: A(x) = exp( Sum_{n>=1} A000172(n)^2*x^n/n ) where Franel number A000172(n) = Sum_{k=0..n} C(n,k)^3.
A216352
G.f.: A(x) = exp( Sum_{n>=1} A000172(n)^2*x^n/n ) where Franel number A000172(n) = Sum_{k=0..n} C(n,k)^3.
Terms
- a(0) =1a(1) =4a(2) =58a(3) =1256a(4) =35771a(5) =1200188a(6) =45016678a(7) =1827941560a(8) =78753548245
External references
- oeis: A216352