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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 1 |
| 10 | 3 |
| 11 | 5 |
| 12 | 9 |
| 13 | 13 |
| 14 | 21 |
| 15 | 41 |
| 16 | 107 |
| 17 | 243 |
| 18 | 717 |
| 19 | 1683 |
| 20 | 4947 |
| 21 | 13775 |
| 22 | 49539 |
| 23 | 165935 |
| 24 | 690319 |
| 25 | 2538097 |
| 26 | 11779735 |
| 27 | 49469745 |
| 28 | 268313075 |
| 29 | 1318481817 |
| 30 | 8182984957 |
[1,1,1,1,1,1,1,1,1,3,5,9,13,21,41,107,243,717, 1683,4947,13775,49539,165935,690319,2538097, 11779735,49469745,268313075,1318481817,8182984957] |