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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 3 |
| 4 | 3 |
| 5 | 19 |
| 6 | 51 |
| 7 | 115 |
| 8 | 115 |
| 9 | 115 |
| 10 | 627 |
| 11 | 627 |
| 12 | 2675 |
| 13 | 2675 |
| 14 | 2675 |
| 15 | 2675 |
| 16 | 35443 |
| 17 | 35443 |
| 18 | 166515 |
| 19 | 166515 |
| 20 | 166515 |
| 21 | 1215091 |
| 22 | 3312243 |
| 23 | 3312243 |
| 24 | 3312243 |
| 25 | 3312243 |
| 26 | 36866675 |
[1,3,3,3,19,51,115,115,115,627,627,2675,2675,2675, 2675,35443,35443,166515,166515,166515,1215091, 3312243,3312243,3312243,3312243,36866675] |