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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | 7 |
| 4 | 227 |
| 5 | 733 |
| 6 | 3257 |
| 7 | 3733 |
| 8 | 5237 |
| 9 | 5333 |
| 10 | 7577 |
| 11 | 7727 |
| 12 | 7757 |
| 13 | 22277 |
| 14 | 23333 |
| 15 | 25537 |
| 16 | 27737 |
| 17 | 32237 |
| 18 | 32327 |
| 19 | 32537 |
| 20 | 35327 |
| 21 | 35537 |
| 22 | 37273 |
| 23 | 37277 |
| 24 | 52237 |
| 25 | 52733 |
| 26 | 53327 |
| 27 | 53353 |
| 28 | 53777 |
| 29 | 55337 |
| 30 | 72227 |
| 31 | 72733 |
| 32 | 75227 |
| 33 | 75533 |
| 34 | 75557 |
| 35 | 222533 |
| 36 | 222553 |
| 37 | 222557 |
| 38 | 223277 |
| 39 | 223757 |
| 40 | 225227 |
[3,5,7,227,733,3257,3733,5237,5333,7577,7727,7757, 22277,23333,25537,27737,32237,32327,32537,35327, 35537,37273,37277,52237,52733,53327,53353,53777, 55337,72227,72733,75227,75533,75557,222533,222553, 222557,223277,223757,225227] |