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 | 38 |
| 2 | 1444 |
| 3 | 54872 |
| 4 | 2085136 |
| 5 | 79235168 |
| 6 | 3010936384 |
| 7 | 114415582592 |
| 8 | 4347792138496 |
| 9 | 165216101262848 |
| 10 | 6278211847988224 |
| 11 | 238572050223552512 |
| 12 | 9065737908494995456 |
| 13 | 344498040522809827328 |
| 14 | 13090925539866773438464 |
| 15 | 497455170514937390661632 |
| 16 | 18903296479567620845142016 |