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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 1 |
| 4 | 5 |
| 5 | 11 |
| 6 | 11 |
| 7 | 17 |
| 8 | 19 |
| 9 | 23 |
| 10 | 97 |
| 11 | 127 |
| 12 | 145 |
| 13 | 167 |
| 14 | 269 |
| 15 | 767 |
| 16 | 479 |
| 17 | 3307 |
| 18 | 1453 |
| 19 | 18007 |
| 20 | 2357 |
| 21 | 599 |
| 22 | 17669 |
| 23 | 5527 |
| 24 | 3191 |
| 25 | 3251 |
| 26 | 70249 |
| 27 | 147773 |
| 28 | 39637 |
[1,5,1,5,11,11,17,19,23,97,127,145,167,269,767, 479,3307,1453,18007,2357,599,17669,5527,3191,3251, 70249,147773,39637] |