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 | 2916 |
| 2 | 147456 |
| 3 | 104976 |
| 4 | 166464 |
| 5 | 331776 |
| 6 | 746496 |
| 7 | 1806336 |
| 8 | 4460544 |
| 9 | 9437184 |
| 10 | 19501056 |
| 11 | 40144896 |
| 12 | 84934656 |
| 13 | 180633600 |
| 14 | 391090176 |
| 15 | 840536064 |
| 16 | 1816805376 |
| 17 | 3893760000 |
| 18 | 8387629056 |
| 19 | 17960288256 |
| 20 | 38654705664 |
| 21 | 82833444864 |
| 22 | 178259595264 |