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 | 261 |
| 2 | 275 |
| 3 | 293 |
| 4 | 309 |
| 5 | 330 |
| 6 | 348 |
| 7 | 366 |
| 8 | 391 |
| 9 | 412 |
| 10 | 440 |
| 11 | 464 |
| 12 | 495 |
| 13 | 521 |