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 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 91 |
| 4 | 5661 |
| 5 | 1173821 |
| 6 | 801125065 |
| 7 | 1786768287095 |
| 8 | 12964564030176889 |
| 9 | 305121026002697122873 |
| 10 | 23243604301636717923421133 |
| 11 | 5722586073277932639539150258131 |
| 12 | 4548248834078776410469611991220703125 |