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 | 2221 |
| 2 | 12227 |
| 3 | 22229 |
| 4 | 22247 |
| 5 | 22259 |
| 6 | 22271 |
| 7 | 22273 |
| 8 | 22277 |
| 9 | 22279 |
| 10 | 22283 |
| 11 | 22291 |
| 12 | 42221 |
| 13 | 42223 |
| 14 | 42227 |
| 15 | 52223 |
| 16 | 72221 |
| 17 | 72223 |
| 18 | 72227 |
| 19 | 72229 |
| 20 | 82223 |
| 21 | 92221 |
| 22 | 92227 |
| 23 | 102229 |
| 24 | 112223 |
| 25 | 122201 |
| 26 | 122203 |
| 27 | 122207 |
| 28 | 122209 |
| 29 | 122219 |
| 30 | 122231 |
| 31 | 122251 |
| 32 | 122263 |
| 33 | 122267 |
| 34 | 122273 |
| 35 | 122279 |
| 36 | 122299 |
| 37 | 132229 |
| 38 | 142223 |