n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 90 |
4 | 2520 |
5 | 113400 |
6 | 7479361 |
7 | 679851145 |
8 | 81464937000 |
9 | 12443633129640 |
10 | 2360051647753800 |
11 | 544135452733303200 |
12 | 149883590538452902825 |
13 | 48612505145280415315705 |
14 | 18337020151083296373118050 |
15 | 7959571454218402191668618850 |
16 | 3939389912325851696444898536160 |
[1,1,6,90,2520,113400,7479361,679851145, 81464937000,12443633129640,2360051647753800, 544135452733303200,149883590538452902825, 48612505145280415315705, 18337020151083296373118050, 7959571454218402191668618850, 3939389912325851696444898536160] |