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 | 6 |
| 5 | 9 |
| 6 | 15 |
| 7 | 21 |
| 8 | 26 |
| 9 | 33 |
| 10 | 42 |
| 11 | 131 |
| 12 | 168 |
| 13 | 434 |
| 14 | 464 |
| 15 | 501 |
| 16 | 1004 |
| 17 | 1011 |
| 18 | 1089 |
| 19 | 1509 |
| 20 | 2025 |
| 21 | 2283 |
| 22 | 2526 |
| 23 | 9150 |
| 24 | 9464 |
| 25 | 14139 |
| 26 | 14827 |
| 27 | 18941 |
| 28 | 32426 |
| 29 | 36719 |
| 30 | 42933 |
| 31 | 138569 |