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 | 22 |
| 2 | 8 |
| 3 | 588 |
| 4 | 376 |
| 5 | 56 |
| 6 | 19656 |
| 7 | 17024 |
| 8 | 4576 |
| 9 | 384 |
| 10 | 801360 |
| 11 | 848096 |
| 12 | 313504 |
| 13 | 48256 |
| 14 | 2624 |
| 15 | 38797920 |
| 16 | 47494272 |
| 17 | 21685888 |
| 18 | 4643072 |
| 19 | 468608 |
| 20 | 17920 |
| 21 | 2181332160 |
| 22 | 2986217856 |
| 23 | 1590913920 |
| 24 | 424509952 |
| 25 | 60136448 |
| 26 | 4307456 |
| 27 | 122368 |
| 28 | 139864717440 |