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 | 21 |
| 2 | 121 |
| 3 | 422 |
| 4 | 1121 |
| 5 | 2507 |
| 6 | 4977 |
| 7 | 9052 |
| 8 | 15393 |
| 9 | 24817 |
| 10 | 38313 |
| 11 | 57058 |
| 12 | 82433 |
| 13 | 116039 |
| 14 | 159713 |
| 15 | 215544 |
| 16 | 285889 |
| 17 | 373389 |
| 18 | 480985 |
| 19 | 611934 |
| 20 | 769825 |
| 21 | 958595 |
| 22 | 1182545 |
| 23 | 1446356 |
| 24 | 1755105 |
| 25 | 2114281 |
| 26 | 2529801 |
| 27 | 3008026 |
| 28 | 3555777 |
| 29 | 4180351 |
| 30 | 4889537 |
| 31 | 5691632 |
| 32 | 6595457 |