a(n) is the numerator of Sum_{k=1..n} 1 / (k*k!).
A353545
a(n) is the numerator of Sum_{k=1..n} 1 / (k*k!).
Terms
- a(0) =1a(1) =5a(2) =47a(3) =379a(4) =9487a(5) =14233a(6) =87179a(7) =44635753a(8) =1205165611a(9) =6025828181a(10) =729125211161a(11) =972166948343
External references
- oeis: A353545