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 | 8 |
| 2 | 48 |
| 3 | 912 |
| 4 | 22944 |
| 5 | 652320 |
| 6 | 20266368 |
| 7 | 669756192 |
| 8 | 23146172544 |
| 9 | 827460518688 |
| 10 | 30378237727200 |
| 11 | 1139447186954208 |
| 12 | 43501453488658368 |
| 13 | 1685588678025512832 |