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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 17 |
| 10 | 17 |
| 11 | 77 |
| 12 | 77 |
| 13 | 549 |
| 14 | 549 |
| 15 | 6061 |
| 16 | 6061 |
| 17 | 126381 |
| 18 | 126381 |
| 19 | 3867721 |
| 20 | 3867721 |
| 21 | 164716773 |
| 22 | 164716773 |
[1,1,1,1,1,1,1,1,17,17,77,77,549,549,6061,6061, 126381,126381,3867721,3867721,164716773,164716773] |