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 | 48 |
| 3 | 5888 |
| 4 | 2097552 |
| 5 | 2563440512 |
| 6 | 11426543880704 |
| 7 | 192247800095048896 |
| 8 | 12445275374147703433760 |
| 9 | 3138050414883209885285902752 |
| 10 | 3107560086436286975829696986907248 |