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 | 4 |
| 3 | 16 |
| 4 | 20 |
| 5 | 1369 |
| 6 | 68 |
| 7 | 10201 |
| 8 | 148 |
| 9 | 272 |
| 10 | 5476 |
| 11 | 29997529 |
| 12 | 340 |
| 13 | 351649 |
| 14 | 40804 |
| 15 | 21904 |
| 16 | 596 |
| 17 | 674041 |
| 18 | 1360 |
| 19 | 1852321 |
| 20 | 21908 |
| 21 | 163216 |
| 22 | 119990116 |
| 23 | 2649731918665280089 |
| 24 | 2020 |
| 25 | 2301289 |
| 26 | 1406596 |
| 27 | 6416 |
| 28 | 204020 |
| 29 | 166497457681 |
| 30 | 87632 |
| 31 | 38862996769 |
| 32 | 2980 |
| 33 | 34351321 |
| 34 | 2696164 |
| 35 | 13965169 |