G.f.: 1 = Sum_{n>=0} a(n)*x^n*Product_{k=1..n+1} (1-k^2*x) for n>0 with a(0)=1.
A209935
G.f.: 1 = Sum_{n>=0} a(n)*x^n*Product_{k=1..n+1} (1-k^2*x) for n>0 with a(0)=1.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =66a(4) =1735a(5) =77587a(6) =5339632a(7) =527780778a(8) =71236904519
External references
- oeis: A209935