G.f.: A(x) = exp( Sum_{n>=1} C(2n-1,n)^2*x^n/n ).
A158266
G.f.: A(x) = exp( Sum_{n>=1} C(2n-1,n)^2*x^n/n ).
Terms
- a(0) =1a(1) =1a(2) =5a(3) =38a(4) =352a(5) =3659a(6) =41012a(7) =484739a(8) =5959417a(9) =75523708a(10) =980470867a(11) =12980840984a(12) =174675568464
External references
- oeis: A158266