a(n) = [x^n] Product_{k=1..n} ((1 + k^2*x)/(1 - k^2*x))^n.
A384093
a(n) = [x^n] Product_{k=1..n} ((1 + k^2*x)/(1 - k^2*x))^n.
Terms
- a(0) =1a(1) =2a(2) =200a(3) =100372a(4) =141369600a(5) =429768373550
External references
- oeis: A384093
A384093
a(n) = [x^n] Product_{k=1..n} ((1 + k^2*x)/(1 - k^2*x))^n.