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 | 1 |
| 2 | 8 |
| 3 | 248 |
| 4 | 29561 |
| 5 | 13548425 |
| 6 | 23883950854 |
| 7 | 161892308617170 |
| 8 | 4219465347519739696 |
| 9 | 422854606293602673217071 |
| 10 | 162939915121835846953153617510 |