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) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 33 |
| 3 | 102 |
| 4 | 1326 |
| 5 | 115005 |
| 6 | 31295895 |
| 7 | 159282123 |
| 8 | 9617162170 |
| 9 | 1535531452026 |
| 10 | 1960347077019695 |
| 11 | 16513791577659519 |
| 12 | 271518698440871310 |