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 | 5 |
| 2 | 6 |
| 3 | 27 |
| 4 | 33 |
| 5 | 147 |
| 6 | 180 |
| 7 | 801 |
| 8 | 981 |
| 9 | 4365 |
| 10 | 5346 |
| 11 | 23787 |
| 12 | 29133 |
| 13 | 129627 |
| 14 | 158760 |
| 15 | 706401 |
| 16 | 865161 |
| 17 | 3849525 |
| 18 | 4714686 |
| 19 | 20977947 |
| 20 | 25692633 |
| 21 | 114319107 |
| 22 | 140011740 |
| 23 | 622980801 |
| 24 | 762992541 |