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 | 7 |
| 3 | 259 |
| 4 | 9525 |
| 5 | 270827 |
| 6 | 6633399 |
| 7 | 158753814 |
| 8 | 3825111851 |
| 9 | 96608374284 |
| 10 | 2446223788303 |