n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 8 |
3 | 120 |
4 | 2640 |
5 | 76560 |
6 | 2756160 |
7 | 118514880 |
8 | 5925744000 |
9 | 337767408000 |
10 | 21617114112000 |
11 | 1534815101952000 |
12 | 119715577952256000 |
13 | 10175824125941760000 |
14 | 936175819586641920000 |
15 | 92681406139077550080000 |
16 | 9824229050742220308480000 |
17 | 1110137882733870894858240000 |
[1,1,8,120,2640,76560,2756160,118514880, 5925744000,337767408000,21617114112000, 1534815101952000,119715577952256000, 10175824125941760000,936175819586641920000, 92681406139077550080000,9824229050742220308480000, 1110137882733870894858240000] |