n | a(n) |
---|---|
3 | 1 |
4 | 15 |
5 | 155 |
6 | 1395 |
7 | 11811 |
8 | 97155 |
9 | 788035 |
10 | 6347715 |
11 | 50955971 |
12 | 408345795 |
13 | 3269560515 |
14 | 26167664835 |
15 | 209386049731 |
16 | 1675267338435 |
17 | 13402854502595 |
18 | 107225699266755 |
19 | 857817047249091 |
20 | 6862582190715075 |
21 | 54900840777134275 |
22 | 439207459223777475 |
[1,15,155,1395,11811,97155,788035,6347715, 50955971,408345795,3269560515,26167664835, 209386049731,1675267338435,13402854502595, 107225699266755,857817047249091,6862582190715075, 54900840777134275,439207459223777475] |