n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 5 |
6 | 10 |
7 | 17 |
8 | 38 |
9 | 466 |
10 | 639 |
11 | 27563 |
12 | 131637 |
13 | 221702 |
14 | 1788830 |
15 | 3038164 |
16 | 7008953 |
17 | 7514089 |
18 | 25863143 |
19 | 88325365 |
20 | 138580426 |
21 | 1775990455 |
[1,1,1,3,5,10,17,38,466,639,27563,131637,221702, 1788830,3038164,7008953,7514089,25863143,88325365, 138580426,1775990455] |