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) |
|---|---|
| 0 | 2 |
| 1 | 24 |
| 2 | 46 |
| 3 | 530 |
| 4 | 552 |
| 5 | 1058 |
| 6 | 12168 |
| 7 | 12190 |
| 8 | 12696 |
| 9 | 24334 |
| 10 | 279842 |
| 11 | 279864 |
| 12 | 280370 |
| 13 | 292008 |
| 14 | 559682 |
| 15 | 6436344 |
| 16 | 6436366 |
| 17 | 6436872 |
| 18 | 6448510 |
| 19 | 6716184 |
| 20 | 12872686 |
| 21 | 148035890 |
| 22 | 148035912 |
| 23 | 148036418 |
| 24 | 148048056 |
| 25 | 148315730 |
| 26 | 154472232 |
| 27 | 296071778 |