a(n) = n! * [x^n] Product_{k>=1} 1/(1 - x^k/k!)^n.
A319174
a(n) = n! * [x^n] Product_{k>=1} 1/(1 - x^k/k!)^n.
Terms
- a(0) =1a(1) =1a(2) =8a(3) =90a(4) =1448a(5) =29750a(6) =747462a(7) =22182741a(8) =759504720a(9) =29468021238
External references
- oeis: A319174