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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 5 |
| 6 | 7 |
| 7 | 481 |
| 8 | 635 |
| 9 | 635 |
| 10 | 199 |
| 11 | 3841 |
| 12 | 3841 |
| 13 | 4979 |
| 14 | 2995 |
| 15 | 13561 |
| 16 | 22903 |
| 17 | 1691 |
| 18 | 5951 |
| 19 | 72697 |
| 20 | 72697 |
| 21 | 72697 |
| 22 | 172151 |
| 23 | 172151 |
| 24 | 1782371 |
| 25 | 1782371 |