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 | 720 |
| 4 | 7102 |
| 5 | 70780 |
| 6 | 704537 |
| 7 | 7026559 |
| 8 | 70122424 |
| 9 | 700184485 |
| 10 | 6993568566 |
| 11 | 69870544960 |
| 12 | 698175242376 |