n | a(n) |
---|---|
0 | 1 |
1 | 12 |
2 | 160 |
3 | 2520 |
4 | 46480 |
5 | 987840 |
6 | 23826880 |
7 | 643843200 |
8 | 19280060800 |
9 | 634002969600 |
10 | 22718375680000 |
11 | 881259515136000 |
12 | 36796205974528000 |
13 | 1645615697037312000 |
14 | 78486991029551104000 |
15 | 3976930001842237440000 |
16 | 213353732165508014080000 |
17 | 12081783988797659136000000 |
[1,12,160,2520,46480,987840,23826880,643843200, 19280060800,634002969600,22718375680000, 881259515136000,36796205974528000, 1645615697037312000,78486991029551104000, 3976930001842237440000,213353732165508014080000, 12081783988797659136000000] |