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 | 0 |
| 2 | 0 |
| 3 | 81 |
| 4 | 512 |
| 5 | 0 |
| 6 | 0 |
| 7 | 16807 |
| 8 | 32768 |
| 9 | 0 |
| 10 | 0 |
| 11 | 161051 |
| 12 | 331776 |
| 13 | 0 |
| 14 | 0 |
| 15 | 1518750 |
| 16 | 1572864 |
| 17 | 0 |
| 18 | 0 |
| 19 | 2476099 |
| 20 | 6400000 |
| 21 | 0 |
| 22 | 0 |
| 23 | 19309029 |
| 24 | 15925248 |
| 25 | 0 |
| 26 | 0 |
| 27 | 19131876 |
| 28 | 34420736 |
| 29 | 0 |
| 30 | 0 |
| 31 | 85887453 |
| 32 | 100663296 |
| 33 | 0 |
| 34 | 0 |
| 35 | 105043750 |
| 36 | 151165440 |
| 37 | 0 |
| 38 | 0 |
| 39 | 360896796 |
| 40 | 204800000 |
| 41 | 0 |
| 42 | 0 |
| 43 | 147008443 |