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) |
|---|---|
| 0 | 0 |
| 1 | 16 |
| 2 | 1296 |
| 3 | 20736 |
| 4 | 160000 |
| 5 | 810000 |
| 6 | 3111696 |
| 7 | 9834496 |
| 8 | 26873856 |
| 9 | 65610000 |
| 10 | 146410000 |
| 11 | 303595776 |
| 12 | 592240896 |
| 13 | 1097199376 |
| 14 | 1944810000 |
| 15 | 3317760000 |
| 16 | 5473632256 |
| 17 | 8767700496 |
| 18 | 13680577296 |
| 19 | 20851360000 |
| 20 | 31116960000 |
| 21 | 45558341136 |
| 22 | 65554433296 |
| 23 | 92844527616 |
| 24 | 129600000000 |