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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 13 |
| 6 | 31 |
| 7 | 53 |
| 8 | 79 |
| 9 | 97 |
| 10 | 131 |
| 11 | 313 |
| 12 | 353 |
| 13 | 757 |
| 14 | 797 |
| 15 | 31357 |
| 16 | 35353 |
| 17 | 35753 |
| 18 | 35797 |
| 19 | 75353 |
| 20 | 75797 |
| 21 | 79757 |
| 22 | 97579 |
| 23 | 131357 |
| 24 | 135353 |
| 25 | 135757 |
| 26 | 353531 |
| 27 | 531353 |
| 28 | 535757 |
| 29 | 575753 |
| 30 | 579757 |
| 31 | 757579 |
| 32 | 797579 |
| 33 | 975313 |
| 34 | 975797 |
| 35 | 979757 |
| 36 | 1313579 |
| 37 | 3131353 |