n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 3 |
6 | 8 |
7 | 17 |
8 | 63 |
9 | 224 |
10 | 1248 |
11 | 8218 |
12 | 75992 |
13 | 906635 |
14 | 14447433 |
15 | 303100595 |
16 | 8415834690 |
17 | 309390830222 |
18 | 15105805368214 |
19 | 982300491033887 |
[1,1,1,1,2,3,8,17,63,224,1248,8218,75992,906635, 14447433,303100595,8415834690,309390830222, 15105805368214,982300491033887] |