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 | 13 |
| 3 | 21 |
| 4 | 33 |
| 5 | 81 |
| 6 | 129 |
| 7 | 285 |
| 8 | 297 |
| 9 | 769 |
| 10 | 3381 |
| 11 | 4441 |
| 12 | 7065 |
| 13 | 77121 |
| 14 | 133437 |
| 15 | 184189 |
| 16 | 191745 |
| 17 | 1279921 |