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 | 121 |
| 3 | 121 |
| 4 | 676 |
| 5 | 4356 |
| 6 | 676 |
| 7 | 3249 |
| 8 | 91204 |
| 9 | 91204 |
| 10 | 3249 |
| 11 | 14400 |
| 12 | 1418481 |
| 13 | 5837056 |
| 14 | 1418481 |
| 15 | 14400 |
| 16 | 61009 |
| 17 | 18429849 |
| 18 | 243953161 |
| 19 | 243953161 |
| 20 | 18429849 |
| 21 | 61009 |
| 22 | 252004 |
| 23 | 213393664 |
| 24 | 7785238756 |
| 25 | 24395316100 |
| 26 | 7785238756 |
| 27 | 213393664 |
| 28 | 252004 |