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 | 2 |
| 2 | 576 |
| 3 | 373248000 |
| 4 | 2642908293365760000 |
| 5 | 629238322197897601351680000000000 |
| 6 | 12078744213598964456884373878200091017216000000000000 |