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) |
|---|---|
| 3 | 1 |
| 4 | 36 |
| 5 | 2063 |
| 6 | 182474 |
| 7 | 23364725 |
| 8 | 4107797216 |
| 9 | 951631193979 |
| 10 | 281268377936406 |
| 11 | 103364179496231841 |
| 12 | 46249298048633298156 |
| 13 | 24761883016575811181799 |
| 14 | 15633887186628672922202850 |
| 15 | 11496293145747030133211784525 |