a(n) = (n!)^2 * [x^n] 1 / BesselJ(0,2*sqrt(x))^n.

A336665

a(n) = (n!)^2 * [x^n] 1 / BesselJ(0,2*sqrt(x))^n.

Terms

    a(0) =1a(1) =1a(2) =10a(3) =255a(4) =12196a(5) =939155a(6) =106161756a(7) =16554165495

External references