n | a(n) |
---|---|
1 | 2 |
2 | 8 |
3 | 70 |
4 | 722 |
5 | 8220 |
6 | 99820 |
7 | 1265204 |
8 | 16547220 |
9 | 221653776 |
10 | 3025553180 |
11 | 41931984034 |
12 | 588491482334 |
13 | 8346638665718 |
14 | 119447839104366 |
15 | 1722663727780132 |
16 | 25011714460877474 |
17 | 365301750223042066 |
18 | 5363288299585278800 |
[2,8,70,722,8220,99820,1265204,16547220,221653776, 3025553180,41931984034,588491482334,8346638665718, 119447839104366,1722663727780132, 25011714460877474,365301750223042066, 5363288299585278800] |