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 | 5 |
| 2 | 7 |
| 3 | 55 |
| 4 | 97 |
| 5 | 455 |
| 6 | 575 |
| 7 | 3385 |
| 8 | 11441 |
| 9 | 12625 |
| 10 | 19447 |
| 11 | 35461 |
| 12 | 81215 |
| 13 | 95327 |