n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 40 |
3 | 2674398 |
4 | 39044429911904441284800 |
5 | 10934377152170553993439479038404269881062854488806451946716107868799042109068 |
[0,1,40,2674398,39044429911904441284800, 10934377152170553993439479038404269881062854488806\ 451946716107868799042109068] |