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 | 0 |
| 1 | 121 |
| 2 | 144 |
| 3 | 113569 |
| 4 | 123904 |
| 5 | 398161 |
| 6 | 399424 |
| 7 | 1708249 |
| 8 | 1710864 |
| 9 | 24591681 |
| 10 | 24681024 |
| 11 | 53890281 |
| 12 | 53934336 |
| 13 | 184063489 |
| 14 | 184742464 |
| 15 | 8338063969 |
| 16 | 8339342400 |
| 17 | 470959650225 |
| 18 | 470972003076 |
| 19 | 25876358308161 |
| 20 | 25876429524544 |
| 21 | 168967735540081 |
| 22 | 168967969517824 |
| 23 | 303965800198225 |