1/(1+Sum_{n>0} (-x)^n/n^2) = Sum_{n>=0} a(n)*x^n/n!^2.

A074706

1/(1+Sum_{n>0} (-x)^n/n^2) = Sum_{n>=0} a(n)*x^n/n!^2.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =22a(4) =272a(5) =5476a(6) =153172a(7) =6027960a(8) =300059328a(9) =19521660672

External references