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 | 1 |
| 3 | 8 |
| 4 | 2744 |
| 5 | 4913000 |
| 6 | 6128487 |
| 7 | 10618986392 |
| 8 | 13481272000 |
| 9 | 23300532400328 |
| 10 | 23716588941891 |
| 11 | 29138498659648 |
| 12 | 51186306590680184 |
| 13 | 52171080143896000 |
| 14 | 63936660906500032 |
| 15 | 112455476846227241000 |
| 16 | 112609104493770863343 |