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 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 3 |
| 7 | 6 |
| 8 | 0 |
| 9 | 4 |
| 10 | 96 |
| 11 | 214 |
| 12 | 128 |
| 13 | 64 |
| 14 | 38 |
| 15 | 54248 |
| 16 | 83925 |
| 17 | 54223 |
| 18 | 28254 |
| 19 | 10223 |
| 20 | 1894 |