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 | 1 |
| 2 | 4 |
| 3 | 1 |
| 4 | 256 |
| 5 | 79 |
| 6 | 1 |
| 7 | 243856 |
| 8 | 3600 |
| 9 | 1 |
| 10 | 581571283 |
| 11 | 281585 |
| 12 | 1 |
| 13 | 2722291223553 |
| 14 | 32581328 |
| 15 | 1 |
| 16 | 21706368614058886 |
| 17 | 5112264019 |
| 18 | 1 |
| 19 | 268740319616196074546 |
| 20 | 1028516654620 |
| 21 | 1 |
| 22 | 4839916638142874877046813 |