n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 1 |
7 | 13 |
8 | 29 |
9 | 57 |
10 | 123 |
11 | 437 |
12 | 1523 |
13 | 7643 |
14 | 32273 |
15 | 153925 |
16 | 786845 |
17 | 5340469 |
18 | 36899655 |
19 | 318800081 |
20 | 2591600741 |
21 | 26626203639 |
22 | 272703572385 |
[1,1,1,1,1,1,13,29,57,123,437,1523,7643,32273, 153925,786845,5340469,36899655,318800081, 2591600741,26626203639,272703572385] |