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| n | a(n) |
|---|---|
| 1 | 23 |
| 2 | 223 |
| 3 | 227 |
| 4 | 337 |
| 5 | 353 |
| 6 | 373 |
| 7 | 557 |
| 8 | 577 |
| 9 | 733 |
| 10 | 757 |
| 11 | 773 |
| 12 | 22573 |
| 13 | 23327 |
| 14 | 25237 |
| 15 | 25253 |
| 16 | 25523 |
| 17 | 27253 |
| 18 | 27527 |
| 19 | 32233 |
| 20 | 32237 |
| 21 | 32257 |
| 22 | 32323 |
| 23 | 32327 |
| 24 | 33223 |
| 25 | 33353 |
| 26 | 33377 |
| 27 | 33533 |
| 28 | 33773 |
| 29 | 35227 |
| 30 | 35353 |
| 31 | 35533 |
| 32 | 35537 |
| 33 | 35573 |
| 34 | 35753 |
| 35 | 37223 |
| 36 | 37337 |
| 37 | 52237 |
| 38 | 52253 |
| 39 | 52727 |
| 40 | 53353 |
[23,223,227,337,353,373,557,577,733,757,773,22573, 23327,25237,25253,25523,27253,27527,32233,32237, 32257,32323,32327,33223,33353,33377,33533,33773, 35227,35353,35533,35537,35573,35753,37223,37337, 52237,52253,52727,53353] |