n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 14 |
3 | 128 |
4 | 1310 |
5 | 14252 |
6 | 161168 |
7 | 1872096 |
8 | 22179102 |
9 | 266766500 |
10 | 3247293764 |
11 | 39914850560 |
12 | 494587904720 |
13 | 6170138404640 |
14 | 77420709800000 |
15 | 976308769560128 |
16 | 12365391374849310 |
17 | 157214288994620820 |
18 | 2005631418267291740 |
[1,2,14,128,1310,14252,161168,1872096,22179102, 266766500,3247293764,39914850560,494587904720, 6170138404640,77420709800000,976308769560128, 12365391374849310,157214288994620820, 2005631418267291740] |