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 | 3 |
| 2 | 43 |
| 3 | 73 |
| 4 | 487 |
| 5 | 2579 |
| 6 | 8741 |
| 7 | 37441 |
| 8 | 89009 |
| 9 | 505117 |
| 10 | 639833 |