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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 29 |
| 10 | 29 |
| 11 | 221 |
| 12 | 221 |
| 13 | 2091 |
| 14 | 2091 |
| 15 | 47147 |
| 16 | 47147 |
| 17 | 1321607 |
| 18 | 1321607 |
| 19 | 74618535 |
| 20 | 74618535 |
| 21 | 6202582309 |
| 22 | 6202582309 |
[1,1,1,1,1,1,1,1,29,29,221,221,2091,2091,47147, 47147,1321607,1321607,74618535,74618535, 6202582309,6202582309] |