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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 9 |
| 5 | 8 |
| 6 | 36 |
| 7 | 216 |
| 8 | 100 |
| 9 | 13824 |
| 10 | 225 |
| 11 | 1728000 |
| 12 | 441 |
| 13 | 373248000 |
| 14 | 784 |
| 15 | 128024064000 |
| 16 | 1296 |
| 17 | 65548320768000 |
| 18 | 2025 |
| 19 | 47784725839872000 |
| 20 | 3025 |
| 21 | 47784725839872000000 |
| 22 | 4356 |
| 23 | 63601470092869632000000 |
| 24 | 6084 |