a(n) is the denominator of Sum_{k=0..n} 1 / (k!)^2.
A354303
a(n) is the denominator of Sum_{k=0..n} 1 / (k!)^2.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =18a(4) =576a(5) =2400a(6) =518400a(7) =12700800a(8) =541900800a(9) =65840947200
External references
- oeis: A354303