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 | 17 |
| 3 | 131 |
| 4 | 659 |
| 5 | 503 |
| 6 | 9833 |
| 7 | 49603 |
| 8 | 327317 |
| 9 | 13900147 |
| 10 | 144229223 |
| 11 | 5872276013 |