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 | 313 |
| 2 | 717 |
| 3 | 1323 |
| 4 | 1929 |
| 5 | 3141 |
| 6 | 3747 |
| 7 | 4353 |
| 8 | 6171 |
| 9 | 7383 |
| 10 | 7989 |
| 11 | 97107 |
| 12 | 103113 |
| 13 | 127137 |
| 14 | 139149 |
| 15 | 157167 |
| 16 | 163173 |
| 17 | 181191 |
| 18 | 223233 |
| 19 | 229239 |
| 20 | 241251 |
| 21 | 271281 |
| 22 | 283293 |
| 23 | 307317 |
| 24 | 337347 |
| 25 | 349359 |
| 26 | 373383 |
| 27 | 379389 |
| 28 | 409419 |
| 29 | 421431 |
| 30 | 433443 |
| 31 | 439449 |
| 32 | 457467 |
| 33 | 499509 |