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 | 48 |
| 2 | 195408 |
| 3 | 16785216 |
| 4 | 397963344 |
| 5 | 4629612960 |
| 6 | 34417365696 |
| 7 | 187489131648 |
| 8 | 814883829840 |
| 9 | 2975546033136 |
| 10 | 9486545735520 |
| 11 | 27052971581376 |
| 12 | 70486219194048 |
| 13 | 169931067595296 |
| 14 | 384163605641088 |