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 | 199 |
| 2 | 3753 |
| 3 | 27267 |
| 4 | 121367 |
| 5 | 401565 |
| 6 | 1089411 |
| 7 | 2563933 |
| 8 | 5423365 |
| 9 | 10557163 |
| 10 | 19228309 |
| 11 | 33165903 |
| 12 | 54668043 |
| 13 | 86714993 |
| 14 | 133092639 |
| 15 | 198526233 |
| 16 | 288824425 |
| 17 | 411033583 |
| 18 | 573602401 |
| 19 | 786556795 |
| 20 | 1061685087 |
| 21 | 1412733477 |
| 22 | 1855611803 |
| 23 | 2408609589 |