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 | 0 |
| 2 | 6 |
| 3 | 12 |
| 4 | 18 |
| 5 | 162 |
| 6 | 192 |
| 7 | 216 |
| 8 | 420 |
| 9 | 1524 |
| 10 | 5112 |
| 11 | 7404 |
| 12 | 24216 |
| 13 | 25944 |
| 14 | 101832 |
| 15 | 346854 |