n | a(n) |
---|---|
1 | 2 |
2 | 1 |
3 | 1 |
4 | 7 |
5 | 5 |
6 | 121 |
7 | 103 |
8 | 5041 |
9 | 40321 |
10 | 362881 |
11 | 329891 |
12 | 39916801 |
13 | 36846277 |
14 | 6227020801 |
15 | 87178291201 |
16 | 1307674368001 |
17 | 1230752346353 |
18 | 355687428096001 |
19 | 336967037143579 |
20 | 121645100408832001 |
21 | 2432902008176640001 |
[2,1,1,7,5,121,103,5041,40321,362881,329891, 39916801,36846277,6227020801,87178291201, 1307674368001,1230752346353,355687428096001, 336967037143579,121645100408832001, 2432902008176640001] |