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 | 131013 |
| 2 | 191019 |
| 3 | 311031 |
| 4 | 611061 |
| 5 | 971097 |
| 6 | 1031103 |
| 7 | 1091109 |
| 8 | 1511151 |
| 9 | 1631163 |
| 10 | 1811181 |
| 11 | 1931193 |
| 12 | 2231223 |
| 13 | 2291229 |
| 14 | 2771277 |
| 15 | 2831283 |
| 16 | 3071307 |
| 17 | 3671367 |
| 18 | 3731373 |
| 19 | 4091409 |
| 20 | 4331433 |
| 21 | 4391439 |
| 22 | 4871487 |
| 23 | 4991499 |
| 24 | 5231523 |
| 25 | 5711571 |