n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 3 |
5 | 24 |
6 | 10 |
7 | 720 |
8 | 315 |
9 | 4480 |
10 | 4536 |
11 | 3628800 |
12 | 11550 |
13 | 479001600 |
14 | 13899600 |
15 | 43051008 |
16 | 638512875 |
17 | 20922789888000 |
18 | 1905904000 |
19 | 6402373705728000 |
20 | 118794043368 |
21 | 68108451840000 |
22 | 4535772564960000 |
23 | 1124000727777607680000 |
[1,1,2,3,24,10,720,315,4480,4536,3628800,11550, 479001600,13899600,43051008,638512875, 20922789888000,1905904000,6402373705728000, 118794043368,68108451840000,4535772564960000, 1124000727777607680000] |