n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 6 |
4 | 6 |
5 | 120 |
6 | 360 |
7 | 5040 |
8 | 2520 |
9 | 72576 |
10 | 1814400 |
11 | 39916800 |
12 | 59875200 |
13 | 1245404160 |
14 | 21794572800 |
15 | 1307674368000 |
16 | 81729648000 |
17 | 71137485619200 |
18 | 3201186852864000 |
19 | 121645100408832000 |
20 | 12164510040883200 |
21 | 10218188434341888000 |
22 | 281000181944401920000 |
23 | 25852016738884976640000 |
[1,1,6,6,120,360,5040,2520,72576,1814400,39916800, 59875200,1245404160,21794572800,1307674368000, 81729648000,71137485619200,3201186852864000, 121645100408832000,12164510040883200, 10218188434341888000,281000181944401920000, 25852016738884976640000] |