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 | 3 |
| 2 | 3 |
| 3 | 19 |
| 4 | 5 |
| 5 | 2801 |
| 6 | 43 |
| 7 | 4733 |
| 8 | 1201 |
| 9 | 1063 |
| 10 | 2801 |
| 11 | 293459 |
| 12 | 181 |
| 13 | 16148168401 |
| 14 | 4733 |
| 15 | 159871 |
| 16 | 169553 |
| 17 | 2767631689 |
| 18 | 117307 |
| 19 | 4534166740403 |
| 20 | 4021 |
| 21 | 11898664849 |
| 22 | 10746341 |
| 23 | 31479823396757 |
| 24 | 1201 |
| 25 | 31280679788951 |
| 26 | 16148168401 |
| 27 | 2583253 |