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 | 16 |
| 2 | 676 |
| 3 | 4356 |
| 4 | 676 |
| 5 | 91204 |
| 6 | 91204 |
| 7 | 14400 |
| 8 | 5837056 |
| 9 | 14400 |
| 10 | 252004 |
| 11 | 213393664 |
| 12 | 7785238756 |
| 13 | 24395316100 |
| 14 | 7785238756 |
| 15 | 213393664 |
| 16 | 252004 |
| 17 | 2288665600 |
| 18 | 207199756864 |
| 19 | 1717027605316 |
| 20 | 1717027605316 |
| 21 | 207199756864 |
| 22 | 2288665600 |