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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 16 |
| 6 | 1 |
| 7 | 36 |
| 8 | 1296 |
| 9 | 46656 |
| 10 | 1 |
| 11 | 288 |
| 12 | 82944 |
| 13 | 23887872 |
| 14 | 6879707136 |
| 15 | 1 |
| 16 | 7200 |
| 17 | 51840000 |
| 18 | 373248000000 |
| 19 | 2687385600000000 |
| 20 | 19349176320000000000 |
| 21 | 1 |
| 22 | 5400 |
| 23 | 58320000 |
| 24 | 78732000000 |
| 25 | 3401222400000000 |
| 26 | 18366600960000000000 |
| 27 | 198359290368000000000000 |
| 28 | 1 |
| 29 | 264600 |
| 30 | 140026320000 |
| 31 | 9262741068000000 |
| 32 | 19607370292742400000000 |