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 | 2 |
| 2 | 4 |
| 3 | 81 |
| 4 | 64 |
| 5 | 9765625 |
| 6 | 0 |
| 7 | 33232930569601 |
| 8 | 262144 |
| 9 | 31381059609 |
| 10 | 0 |
| 11 | 17449402268886407318558803753801 |
| 12 | 0 |
| 13 | 361188648084531445929920877641340156544317601 |
| 14 | 0 |
| 15 | 0 |
| 16 | 4503599627370496 |