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 | 1 |
| 2 | 2 |
| 3 | 9 |
| 4 | 11 |
| 5 | 17 |
| 6 | 48 |
| 7 | 57 |
| 8 | 427 |
| 9 | 533 |
| 10 | 1661 |
| 11 | 2161 |
| 12 | 4441 |
| 13 | 5428 |
| 14 | 41628 |
| 15 | 171441 |
| 16 | 411735 |
| 17 | 555716 |
| 18 | 1278525 |
| 19 | 4292829 |
| 20 | 5174373 |
| 21 | 8758407 |
| 22 | 680133057 |