n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 3 |
6 | 7 |
7 | 15 |
8 | 43 |
9 | 83 |
10 | 271 |
11 | 633 |
12 | 3283 |
13 | 9541 |
14 | 54293 |
15 | 204827 |
16 | 1408893 |
17 | 6437305 |
18 | 54681853 |
19 | 303651861 |
20 | 3282191633 |
21 | 22628378377 |
22 | 297350762879 |
23 | 2544553561975 |
24 | 41024771076465 |
25 | 431789004830701 |
26 | 8608866149320377 |
27 | 111456693040140865 |
[1,1,1,3,3,7,15,43,83,271,633,3283,9541,54293, 204827,1408893,6437305,54681853,303651861, 3282191633,22628378377,297350762879,2544553561975, 41024771076465,431789004830701,8608866149320377, 111456693040140865] |