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

A346312

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

Terms

    a(0) =1a(1) =-1a(2) =-1a(3) =5a(4) =28a(5) =724a(6) =36a(7) =220716a(8) =-1255680a(9) =110979072a(10) =2530310400

External references