n | a(n) |
---|---|
12 | 1 |
13 | 104 |
14 | 6216 |
15 | 280840 |
16 | 10668000 |
17 | 359933112 |
18 | 11143364232 |
19 | 323295330680 |
20 | 8917061687820 |
21 | 236236542585120 |
22 | 6057158960772920 |
23 | 151175678720167920 |
24 | 3689062737122341488 |
25 | 88326646952501966400 |
26 | 2080775440409128608600 |
[1,104,6216,280840,10668000,359933112,11143364232, 323295330680,8917061687820,236236542585120, 6057158960772920,151175678720167920, 3689062737122341488,88326646952501966400, 2080775440409128608600] |