a(n) = n! * [x^n] 1/(1 - Sum_{k=1..n} (exp(k*x) - 1)/k).
A355428
a(n) = n! * [x^n] 1/(1 - Sum_{k=1..n} (exp(k*x) - 1)/k).
Terms
- a(0) =1a(1) =1a(2) =11a(3) =284a(4) =13564a(5) =1037479a(6) =116171621a(7) =17916010524
External references
- oeis: A355428
A355428
a(n) = n! * [x^n] 1/(1 - Sum_{k=1..n} (exp(k*x) - 1)/k).