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 | 27 |
| 2 | 135 |
| 3 | 2511 |
| 4 | 2295 |
| 5 | 6975 |
| 6 | 5264 |
| 7 | 12393728 |
| 8 | 12375 |
| 9 | 2200933376 |
| 10 | 108224 |
| 11 | 257499 |
| 12 | 170624 |
| 13 | 3684603215871 |
| 14 | 4402431 |
| 15 | 2035980763136 |
| 16 | 126224 |
| 17 | 41680575 |
| 18 | 701443071 |
| 19 | 46977524 |
| 20 | 1245375 |
| 21 | 2707370000 |
| 22 | 4388175 |
| 23 | 3129761024 |
| 24 | 1890944 |