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 | 313 |
| 6 | 353 |
| 7 | 373 |
| 8 | 383 |
| 9 | 797 |
| 10 | 30103 |
| 11 | 31013 |
| 12 | 70607 |
| 13 | 73037 |
| 14 | 76367 |
| 15 | 79397 |
| 16 | 3002003 |
| 17 | 7096907 |
| 18 | 7693967 |
| 19 | 700090007 |
| 20 | 799636997 |
| 21 | 70060906007 |
| 22 | 3000002000003 |
| 23 | 7030000000307 |
| 24 | 300000020000003 |
| 25 | 300001030100003 |
| 26 | 310000060000013 |
| 27 | 38000000000000000000083 |
| 28 | 30000000004000300040000000003 |
| 29 | 3000001000000000000000000000001000003 |