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| n | a(n) |
|---|---|
| 1 | 23 |
| 2 | 67 |
| 3 | 89 |
| 4 | 1213 |
| 5 | 3637 |
| 6 | 4243 |
| 7 | 4567 |
| 8 | 5051 |
| 9 | 5657 |
| 10 | 6263 |
| 11 | 6869 |
| 12 | 7879 |
| 13 | 8081 |
| 14 | 9091 |
| 15 | 9293 |
| 16 | 9697 |
| 17 | 102103 |
| 18 | 108109 |
| 19 | 120121 |
| 20 | 126127 |
| 21 | 138139 |
| 22 | 150151 |
| 23 | 156157 |
| 24 | 180181 |
| 25 | 186187 |
| 26 | 188189 |
| 27 | 192193 |
| 28 | 200201 |
| 29 | 216217 |
| 30 | 242243 |
| 31 | 246247 |
| 32 | 252253 |
| 33 | 270271 |
[23,67,89,1213,3637,4243,4567,5051,5657,6263,6869, 7879,8081,9091,9293,9697,102103,108109,120121, 126127,138139,150151,156157,180181,186187,188189, 192193,200201,216217,242243,246247,252253,270271] |