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 | 625 |
| 4 | 57057 |
| 5 | 7748433 |
| 6 | 30850281 |
| 7 | 111494625 |
| 8 | 393423745 |
| 9 | 499088601 |
| 10 | 519341361 |
| 11 | 1051107705 |
| 12 | 1329416385 |
| 13 | 1616038425 |
| 14 | 2215448001 |
| 15 | 2433936225 |
| 16 | 2852972265 |
| 17 | 3399207273 |
| 18 | 4344683849 |
| 19 | 4961725281 |
| 20 | 5454760185 |
| 21 | 5485530369 |
| 22 | 6578054145 |
| 23 | 6678031745 |
| 24 | 7701979761 |
| 25 | 7807302825 |