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 | 2 |
| 2 | 23 |
| 3 | 23 |
| 4 | 239 |
| 5 | 239 |
| 6 | 239 |
| 7 | 3413 |
| 8 | 14249 |
| 9 | 524219 |
| 10 | 4167379 |
| 11 | 324550981 |
| 12 | 2589767209 |
| 13 | 346333812907 |