This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 1373 |
| 2 | 3137 |
| 3 | 3797 |
| 4 | 6131 |
| 5 | 6173 |
| 6 | 6197 |
| 7 | 9719 |
| 8 | 11311 |
| 9 | 11317 |
| 10 | 17971 |
| 11 | 31379 |
| 12 | 61379 |
| 13 | 71971 |
| 14 | 113131 |
| 15 | 113173 |
| 16 | 113797 |
| 17 | 131311 |
| 18 | 131317 |
| 19 | 131797 |
| 20 | 179719 |
| 21 | 317971 |
| 22 | 431311 |
| 23 | 431797 |
| 24 | 617971 |
| 25 | 1131131 |
| 26 | 1131379 |
| 27 | 1311311 |
| 28 | 1313797 |
| 29 | 1317971 |
| 30 | 3131137 |
| 31 | 3131311 |