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 | 2 |
| 2 | 49 |
| 3 | 4557 |
| 4 | 13689 |
| 5 | 18816 |
| 6 | 86015 |
| 7 | 159249 |
| 8 | 226981 |
| 9 | 1368912 |
| 10 | 2112278 |
| 11 | 25153757 |
| 12 | 85184000 |