n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 13 |
4 | 63 |
5 | 326 |
6 | 1769 |
7 | 9964 |
8 | 57843 |
9 | 344203 |
10 | 2090470 |
11 | 12912988 |
12 | 80899801 |
13 | 512896540 |
14 | 3284651548 |
15 | 21217493460 |
16 | 138080484819 |
17 | 904454380446 |
18 | 5958186674879 |
19 | 39448465279220 |
20 | 262359379484522 |
21 | 1751912981641794 |
22 | 11741044418866476 |
[1,3,13,63,326,1769,9964,57843,344203,2090470, 12912988,80899801,512896540,3284651548, 21217493460,138080484819,904454380446, 5958186674879,39448465279220,262359379484522, 1751912981641794,11741044418866476] |