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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 11 |
| 4 | 17 |
| 5 | 29 |
| 6 | 199 |
| 7 | 321 |
| 8 | 521 |
| 9 | 3571 |
| 10 | 5777 |
| 11 | 9349 |
| 12 | 64079 |
| 13 | 103681 |
| 14 | 167761 |
| 15 | 1149851 |
| 16 | 1860497 |
| 17 | 3010349 |
| 18 | 20633239 |
[1,1,11,17,29,199,321,521,3571,5777,9349,64079, 103681,167761,1149851,1860497,3010349,20633239] |