Product_{n>=1} 1 / (1 - x^(2*n))^(a(n)/(2*n)!) = cos(x).
A354063
Product_{n>=1} 1 / (1 - x^(2*n))^(a(n)/(2*n)!) = cos(x).
Terms
- a(0) =-1a(1) =4a(2) =104a(3) =1408a(4) =354944a(5) =-21642752a(6) =6204652544a(7) =68669145088
External references
- oeis: A354063