E.g.f.: exp( Sum_{n>=1} x^(2*n) / (2*n*(2*n-1)) ) = Sum_{n>=0} a(n)*x^(2*n)/(2*n)!.
A211393
E.g.f.: exp( Sum_{n>=1} x^(2*n) / (2*n*(2*n-1)) ) = Sum_{n>=0} a(n)*x^(2*n)/(2*n)!.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =69a(4) =2057a(5) =111465a(6) =9704397a(7) =1244894637a(8) =221232748305
External references
- oeis: A211393