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 | 7 |
| 2 | 70 |
| 3 | 514 |
| 4 | 22440 |
| 5 | 2250982 |
| 6 | 45244488 |
| 7 | 1001060834 |
| 8 | 1438433201164 |