n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 1 |
7 | 1 |
8 | 3 |
9 | 9 |
10 | 19 |
11 | 39 |
12 | 119 |
13 | 357 |
14 | 921 |
15 | 3063 |
16 | 15421 |
17 | 82217 |
18 | 416323 |
19 | 2370803 |
20 | 16101191 |
21 | 113312875 |
22 | 843888839 |
23 | 7373458463 |
24 | 76576709025 |
[1,1,1,1,1,1,1,3,9,19,39,119,357,921,3063,15421, 82217,416323,2370803,16101191,113312875,843888839, 7373458463,76576709025] |