n | a(n) |
---|---|
0 | 1 |
1 | 20 |
2 | 276 |
3 | 3280 |
4 | 36176 |
5 | 383040 |
6 | 3962176 |
7 | 40428800 |
8 | 409195776 |
9 | 4121666560 |
10 | 41395966976 |
11 | 415039672320 |
12 | 4156893515776 |
13 | 41607983022080 |
14 | 416314385842176 |
15 | 4164552265891840 |
16 | 41653977398706176 |
17 | 416590519605657600 |
[1,20,276,3280,36176,383040,3962176,40428800, 409195776,4121666560,41395966976,415039672320, 4156893515776,41607983022080,416314385842176, 4164552265891840,41653977398706176, 416590519605657600] |