n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 6 |
4 | 108 |
5 | 2640 |
6 | 84600 |
7 | 3613680 |
8 | 203071680 |
9 | 14629870080 |
10 | 1316802614400 |
11 | 144849884256000 |
12 | 19120208432371200 |
13 | 2982752889071155200 |
14 | 542861032044198067200 |
15 | 114000816839126241024000 |
16 | 27360196043430269859840000 |
17 | 7441973323852870393823232000 |
18 | 2277243837099794643157389312000 |
[1,1,6,108,2640,84600,3613680,203071680, 14629870080,1316802614400,144849884256000, 19120208432371200,2982752889071155200, 542861032044198067200,114000816839126241024000, 27360196043430269859840000, 7441973323852870393823232000, 2277243837099794643157389312000] |