a(n) = [x^n] 1/(1 + n*(1 - theta_2(sqrt(x))/(2*x^(1/8)))), where theta_2() is the Jacobi theta function.
A301334
a(n) = [x^n] 1/(1 + n*(1 - theta_2(sqrt(x))/(2*x^(1/8)))), where theta_2() is the Jacobi theta function.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =30a(4) =288a(5) =3500a(6) =51882a(7) =908705a(8) =18376192a(9) =421518897a(10) =10815546010a(11) =306954846231
External references
- oeis: A301334