n | a(n) |
---|---|
6 | 1 |
7 | 7 |
8 | 84 |
9 | 840 |
10 | 9870 |
11 | 113652 |
12 | 1480248 |
13 | 19699680 |
14 | 286768482 |
15 | 4358914560 |
16 | 71096721696 |
17 | 1216711960464 |
18 | 22116370171896 |
19 | 421629228820800 |
20 | 8473857766133760 |
21 | 178260053918650704 |
22 | 3931319749640138856 |
23 | 90499126549555707984 |
24 | 2174651142277047610176 |
25 | 54390059451824183287200 |
[1,7,84,840,9870,113652,1480248,19699680, 286768482,4358914560,71096721696,1216711960464, 22116370171896,421629228820800,8473857766133760, 178260053918650704,3931319749640138856, 90499126549555707984,2174651142277047610176, 54390059451824183287200] |