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 | 1 |
| 1 | 1 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 2 |
| 6 | 2 |
| 7 | 2 |
| 8 | 2 |
| 9 | 8 |
| 10 | 12 |
| 11 | 16 |
| 12 | 20 |
| 13 | 35 |
| 14 | 46 |
| 15 | 59 |
| 16 | 81 |
| 17 | 109 |
| 18 | 144 |
| 19 | 202 |
| 20 | 282 |