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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 | 1 |
| 11 | 5 |
| 12 | 5 |
| 13 | 21 |
| 14 | 21 |
| 15 | 83 |
| 16 | 83 |
| 17 | 385 |
| 18 | 385 |
| 19 | 2131 |
| 20 | 2131 |
| 21 | 24025 |
| 22 | 24025 |
| 23 | 318135 |
| 24 | 318135 |
| 25 | 5078109 |
| 26 | 5078109 |
| 27 | 98561015 |
[1,1,1,1,1,1,1,1,1,1,5,5,21,21,83,83,385,385,2131, 2131,24025,24025,318135,318135,5078109,5078109, 98561015] |