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 | 2 |
| 3 | 27 |
| 4 | 1504 |
| 5 | 330745 |
| 6 | 289031301 |
| 7 | 1011348629263 |
| 8 | 14213347986246578 |
| 9 | 802722082112213275116 |
| 10 | 182118530044524172384716760 |
| 11 | 165892108866362877173717099499469 |