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) |
|---|---|
| 3 | 2 |
| 4 | 128 |
| 5 | 2097152 |
| 6 | 2251799813685248 |
| 7 | 10384593717069655257060992658440192 |
| 8 | 883423532389192164791648750371459257913741948437809479060803100646309888 |