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 | 0 |
| 3 | 2 |
| 4 | 4 |
| 5 | 2 |
| 6 | 8 |
| 7 | 6 |
| 8 | 28 |
| 9 | 36 |
| 10 | 40 |
| 11 | 56 |
| 12 | 106 |
| 13 | 192 |
| 14 | 304 |
| 15 | 526 |
| 16 | 926 |
| 17 | 1644 |
| 18 | 2756 |
| 19 | 4944 |
| 20 | 8840 |
| 21 | 15958 |
| 22 | 28402 |
| 23 | 51102 |
| 24 | 92372 |