n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 1 |
7 | 3 |
8 | 7 |
9 | 15 |
10 | 27 |
11 | 67 |
12 | 281 |
13 | 1263 |
14 | 5491 |
15 | 23639 |
16 | 128337 |
17 | 894617 |
18 | 7261755 |
19 | 63564439 |
20 | 605898697 |
21 | 6745478781 |
22 | 88749999709 |
23 | 1352715152779 |
[1,1,1,1,1,1,3,7,15,27,67,281,1263,5491,23639, 128337,894617,7261755,63564439,605898697, 6745478781,88749999709,1352715152779] |