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 | 543 |
| 2 | 765 |
| 3 | 131211 |
| 4 | 191817 |
| 5 | 313029 |
| 6 | 434241 |
| 7 | 616059 |
| 8 | 737271 |
| 9 | 103102101 |
| 10 | 109108107 |
| 11 | 139138137 |
| 12 | 151150149 |
| 13 | 181180179 |
| 14 | 193192191 |
| 15 | 199198197 |
| 16 | 229228227 |
| 17 | 241240239 |
| 18 | 271270269 |
| 19 | 283282281 |
| 20 | 313312311 |
| 21 | 349348347 |
| 22 | 421420419 |
| 23 | 433432431 |
| 24 | 463462461 |
| 25 | 523522521 |
| 26 | 571570569 |
| 27 | 601600599 |