n | a(n) |
---|---|
0 | 1 |
1 | 16 |
2 | 240 |
3 | 3600 |
4 | 53880 |
5 | 806400 |
6 | 12069120 |
7 | 180633600 |
8 | 2703470280 |
9 | 40461750000 |
10 | 605574696720 |
11 | 9063392310000 |
12 | 135648138214680 |
13 | 2030190989349600 |
14 | 30385049935084320 |
15 | 454760790684530400 |
16 | 6806221388012959080 |
17 | 101865971146974325200 |
18 | 1524586916316221551920 |
[1,16,240,3600,53880,806400,12069120,180633600, 2703470280,40461750000,605574696720,9063392310000, 135648138214680,2030190989349600, 30385049935084320,454760790684530400, 6806221388012959080,101865971146974325200, 1524586916316221551920] |