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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 10 |
| 3 | 3527 |
| 4 | 123296356 |
| 5 | 757031629267449 |
| 6 | 1263498691933197473321646 |
| 7 | 823340843273442113630752833831086703 |
| 8 | 285062591046216676379736060856308430344065653125000 |