a(n) = (n+1) * (n!)^3 * Sum_{k=1..n} 1/((k+1) * (k!)^3).
A368788
a(n) = (n+1) * (n!)^3 * Sum_{k=1..n} 1/((k+1) * (k!)^3).
Terms
- a(0) =0a(1) =1a(2) =13a(3) =469a(4) =37521a(5) =5628151a(6) =1418294053a(7) =555971268777
External references
- oeis: A368788