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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 3 |
| 6 | 5 |
| 7 | 7 |
| 8 | 13 |
| 9 | 25 |
| 10 | 59 |
| 11 | 170 |
| 12 | 644 |
| 13 | 3402 |
| 14 | 27178 |
| 15 | 361139 |
| 16 | 8947437 |
| 17 | 474314304 |
[1,1,2,2,3,5,7,13,25,59,170,644,3402,27178,361139, 8947437,474314304] |