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 | 6 |
| 2 | 18 |
| 3 | 906 |
| 4 | 5466 |
| 5 | 257302 |
| 6 | 825366 |
| 7 | 1880082 |
| 8 | 6637546 |
| 9 | 6765826 |
| 10 | 8936722 |
| 11 | 9483706 |
| 12 | 34087054 |
| 13 | 51914026 |
| 14 | 54806454 |
| 15 | 57663334 |
| 16 | 57819882 |
| 17 | 67372378 |
| 18 | 91835206 |
| 19 | 98963734 |
| 20 | 102985926 |
| 21 | 117697186 |
| 22 | 134457346 |
| 23 | 143888806 |
| 24 | 172530646 |
| 25 | 206623266 |