a(n) = coefficient of x^n in n!*Product_{k=0..n} [Sum_{j=0..k} x^j/j! ].
A129481
a(n) = coefficient of x^n in n!*Product_{k=0..n} [Sum_{j=0..k} x^j/j! ].
Terms
- a(0) =1a(1) =1a(2) =3a(3) =19a(4) =175a(5) =2111a(6) =31321a(7) =550810a(8) =11194177a(9) =258068893a(10) =6653230111a(11) =189653427206
External references
- oeis: A129481