a(n) = (n+1) * (n!)^3 * Sum_{k=0..n} 1/((k+1) * (k!)^3).
A368775
a(n) = (n+1) * (n!)^3 * Sum_{k=0..n} 1/((k+1) * (k!)^3).
Terms
- a(0) =1a(1) =3a(2) =37a(3) =1333a(4) =106641a(5) =15996151a(6) =4031030053
External references
- oeis: A368775
A368775
a(n) = (n+1) * (n!)^3 * Sum_{k=0..n} 1/((k+1) * (k!)^3).