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 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 3 |
| 7 | 5 |
| 8 | 11 |
| 9 | 11 |
| 10 | 24 |
| 11 | 35 |
| 12 | 84 |
| 13 | 92 |
| 14 | 174 |
| 15 | 254 |
| 16 | 606 |
| 17 | 658 |
| 18 | 1255 |
| 19 | 1769 |
| 20 | 4353 |
| 21 | 4667 |
| 22 | 9131 |