n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 30 |
4 | 175 |
5 | 4410 |
6 | 29106 |
7 | 396396 |
8 | 2760615 |
9 | 156434850 |
10 | 1122854590 |
11 | 16291599324 |
12 | 119224885962 |
13 | 3515605611700 |
14 | 26077294372500 |
15 | 388924218927000 |
16 | 2913690606794775 |
17 | 350671234206006450 |
18 | 2647224022927695750 |
19 | 40095381399899017500 |
20 | 304513870316075169750 |
[1,3,30,175,4410,29106,396396,2760615,156434850, 1122854590,16291599324,119224885962,3515605611700, 26077294372500,388924218927000,2913690606794775, 350671234206006450,2647224022927695750, 40095381399899017500,304513870316075169750] |