n | a(n) |
---|---|
1 | 2 |
2 | 2 |
3 | 16 |
4 | 18 |
5 | 154 |
6 | 282 |
7 | 1976 |
8 | 5706 |
9 | 42470 |
10 | 147092 |
11 | 1196210 |
12 | 5215010 |
13 | 48697758 |
14 | 245354078 |
15 | 2815029508 |
16 | 16378986516 |
[2,2,16,18,154,282,1976,5706,42470,147092,1196210, 5215010,48697758,245354078,2815029508,16378986516] |