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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 23 |
| 3 | 37 |
| 4 | 47 |
| 5 | 59 |
| 6 | 67 |
| 7 | 79 |
| 8 | 89 |
| 9 | 911 |
| 10 | 1013 |
| 11 | 1117 |
| 12 | 1213 |
| 13 | 1319 |
| 14 | 1423 |
| 15 | 1523 |
| 16 | 1619 |
| 17 | 1721 |
[13,23,37,47,59,67,79,89,911,1013,1117,1213,1319, 1423,1523,1619,1721] |