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 | 5 |
| 3 | 7 |
| 4 | 9 |
| 5 | 11 |
| 6 | 33 |
| 7 | 36 |
| 8 | 49 |
| 9 | 453 |
| 10 | 727 |
| 11 | 1560 |
| 12 | 1569 |
| 13 | 1627 |
| 14 | 5078 |
| 15 | 6605 |
| 16 | 17663 |
| 17 | 27281 |
| 18 | 29298 |
| 19 | 29708 |
| 20 | 39509 |
| 21 | 98653 |