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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 17 |
| 3 | 257 |
| 4 | 277 |
| 5 | 337 |
| 6 | 1093 |
| 7 | 1109 |
| 8 | 1297 |
| 9 | 1361 |
| 10 | 4357 |
| 11 | 5189 |
| 12 | 16453 |
| 13 | 16657 |
| 14 | 16661 |
| 15 | 17489 |
| 16 | 17669 |
| 17 | 17681 |
| 18 | 17749 |
| 19 | 21521 |
| 20 | 21569 |
| 21 | 21589 |
| 22 | 65537 |
| 23 | 65557 |
| 24 | 65617 |
| 25 | 65809 |
| 26 | 66821 |
| 27 | 70657 |
| 28 | 70981 |
| 29 | 70997 |
| 30 | 81937 |
| 31 | 82241 |
| 32 | 83221 |
| 33 | 83269 |
| 34 | 86017 |
| 35 | 86357 |
| 36 | 87317 |
| 37 | 263429 |
| 38 | 263489 |
| 39 | 267541 |
| 40 | 278549 |
[5,17,257,277,337,1093,1109,1297,1361,4357,5189, 16453,16657,16661,17489,17669,17681,17749,21521, 21569,21589,65537,65557,65617,65809,66821,70657, 70981,70997,81937,82241,83221,83269,86017,86357, 87317,263429,263489,267541,278549] |