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) |
|---|---|
| 6 | 42 |
| 7 | 0 |
| 8 | 0 |
| 9 | 18 |
| 10 | 186 |
| 11 | 66 |
| 12 | 0 |
| 13 | 234 |
| 14 | 930 |
| 15 | 750 |
| 16 | 0 |
| 17 | 2244 |
| 18 | 4578 |
| 19 | 6498 |
| 20 | 120 |