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 | 397 |
| 4 | 37293 |
| 5 | 12746301 |
| 6 | 15822272735 |
| 7 | 71947571249709 |
| 8 | 1200506645405599669 |