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) |
|---|---|
| 3 | 2 |
| 4 | 2 |
| 5 | 2 |
| 6 | 1 |
| 7 | 2 |
| 8 | 4 |
| 9 | 6 |
| 10 | 4 |
| 11 | 7 |
| 12 | 10 |
| 13 | 23 |
| 14 | 32 |
| 15 | 49 |
| 16 | 87 |
| 17 | 140 |
| 18 | 257 |
| 19 | 480 |
| 20 | 803 |
| 21 | 1311 |
| 22 | 2450 |