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 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 24 |
| 5 | 125 |
| 6 | 796 |
| 7 | 5635 |
| 8 | 48042 |
| 9 | 453947 |
| 10 | 4834872 |
| 11 | 56433455 |
| 12 | 727449366 |
| 13 | 10099103269 |
| 14 | 152097526360 |
| 15 | 2449915208271 |
| 16 | 42295879864692 |