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 | 5 |
| 3 | 10 |
| 4 | 17 |
| 5 | 28 |
| 6 | 41 |
| 7 | 58 |
| 8 | 89 |
| 9 | 126 |
| 10 | 197 |
| 11 | 270 |
| 12 | 349 |
| 13 | 446 |
| 14 | 559 |
| 15 | 690 |
| 16 | 889 |
| 17 | 1200 |
| 18 | 1537 |
| 19 | 1910 |
| 20 | 2643 |
| 21 | 3562 |
| 22 | 4553 |
| 23 | 1111111111111115664 |
| 24 | 11112222222222222226775 |