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 | 0 |
| 2 | 1 |
| 3 | 100 |
| 4 | 10000 |
| 5 | 1000000 |
| 6 | 22676644 |
| 7 | 23348224 |
| 8 | 100000000 |
| 9 | 107661376 |
| 10 | 110103049 |
| 11 | 125552025 |
| 12 | 153388225 |
| 13 | 160022500 |
| 14 | 219899241 |
| 15 | 504002500 |
| 16 | 552532036 |
| 17 | 605406025 |
| 18 | 696643236 |
| 19 | 1169366416 |
| 20 | 1311526225 |
| 21 | 2267664400 |