a(n) = [x^n] Product_{k=0..n-1} (1 + k*x)/(1 - k*x).
A383767
a(n) = [x^n] Product_{k=0..n-1} (1 + k*x)/(1 - k*x).
Terms
- a(0) =1a(1) =0a(2) =2a(3) =42a(4) =1152a(5) =40520a(6) =1751850a(7) =90087522a(8) =5376546560a(9) =365487900192
External references
- oeis: A383767