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 | 1 |
| 2 | 128 |
| 3 | 2187 |
| 4 | 24640 |
| 5 | 78125 |
| 6 | 559872 |
| 7 | 823543 |
| 8 | 4552064 |
| 9 | 7175547 |
| 10 | 20000000 |
| 11 | 19487171 |
| 12 | 125551296 |
| 13 | 62748517 |
| 14 | 210827008 |
| 15 | 341718750 |
| 16 | 818079776 |
| 17 | 410338673 |
| 18 | 2142910080 |
| 19 | 893871739 |
| 20 | 4485000000 |
| 21 | 3602177082 |
| 22 | 4988715776 |
| 23 | 3404825447 |
| 24 | 26025929856 |
| 25 | 9155312500 |
| 26 | 16063620352 |
| 27 | 22666490820 |