n | a(n) |
---|---|
3 | 1 |
4 | 9 |
5 | 61 |
6 | 381 |
7 | 2332 |
8 | 14337 |
9 | 89497 |
10 | 569794 |
11 | 3704504 |
12 | 24584693 |
13 | 166335677 |
14 | 1145533650 |
15 | 8017098273 |
16 | 56928364553 |
17 | 409558170361 |
18 | 2981386305018 |
19 | 21935294881644 |
20 | 162951791097669 |
21 | 1221201051018189 |
22 | 9225637750090023 |
23 | 70209505971502533 |
24 | 537934326588404973 |
[1,9,61,381,2332,14337,89497,569794,3704504, 24584693,166335677,1145533650,8017098273, 56928364553,409558170361,2981386305018, 21935294881644,162951791097669,1221201051018189, 9225637750090023,70209505971502533, 537934326588404973] |