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 | 2 |
| 2 | 4 |
| 3 | 6 |
| 4 | 10 |
| 5 | 70 |
| 6 | 82 |
| 7 | 143 |
| 8 | 150 |
| 9 | 220 |
| 10 | 413 |
| 11 | 426 |
| 12 | 816 |
| 13 | 5497 |
| 14 | 6649 |
| 15 | 7429 |
| 16 | 7728 |
| 17 | 7891 |
| 18 | 8248 |
| 19 | 14567 |
| 20 | 15522 |
| 21 | 17935 |
| 22 | 24942 |
| 23 | 37415 |
| 24 | 123773 |