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 | 0 |
| 2 | 175 |
| 3 | 2242 |
| 4 | 25772 |
| 5 | 333978 |
| 6 | 4479721 |
| 7 | 62017670 |
| 8 | 875957672 |
| 9 | 12560888618 |
| 10 | 182209987206 |
| 11 | 2667426495648 |
| 12 | 39336570372328 |
| 13 | 583551389553584 |
| 14 | 8699133677297779 |
| 15 | 130203654030371640 |
| 16 | 1955400385644628586 |