a(n) is the numerator of Sum_{k=0..n} 1 / (k!)^2.
A354302
a(n) is the numerator of Sum_{k=0..n} 1 / (k!)^2.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =41a(4) =1313a(5) =5471a(6) =1181737a(7) =28952557a(8) =1235309099a(9) =150090055529
External references
- oeis: A354302