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 | 364 |
| 2 | 41405 |
| 3 | 2318680 |
| 4 | 78835120 |
| 5 | 1837984512 |
| 6 | 31803696288 |
| 7 | 431621592480 |
| 8 | 4783805983320 |
| 9 | 44648855844320 |
| 10 | 359423289546776 |
| 11 | 2543610972177184 |
| 12 | 16072267131888800 |
| 13 | 91841526467936000 |
| 14 | 479707973069130000 |
| 15 | 2311063705550691000 |
| 16 | 10348807328532138375 |