a(n) = denominator(1 + Sum_{k=1..n} n^2 / Product_{j=1..k} 4*j^2).
A212297
a(n) = denominator(1 + Sum_{k=1..n} n^2 / Product_{j=1..k} 4*j^2).
Terms
- a(0) =4a(1) =16a(2) =256a(3) =9216a(4) =196608a(5) =11796480a(6) =8493465600a(7) =554906419200
External references
- oeis: A212297