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 | 8 |
| 3 | 392 |
| 4 | 1831056 |
| 5 | 48217776 |
| 6 | 1217651376 |
| 7 | 30502319376 |
| 8 | 144640604656 |
| 9 | 762863159376 |
| 10 | 3774960835776 |
| 11 | 19073104859376 |
| 12 | 95168749491376 |
| 13 | 476835250859376 |
| 14 | 2383192380269376 |
| 15 | 11320075681132656 |
| 16 | 11920919418359376 |