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 | 1 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 1 |
| 8 | 0 |
| 9 | 3 |
| 10 | 2 |
| 11 | 0 |
| 12 | 6 |
| 13 | 3 |
| 14 | 5 |
| 15 | 14 |
| 16 | 22 |
| 17 | 26 |
| 18 | 60 |
| 19 | 64 |
| 20 | 71 |
| 21 | 179 |
| 22 | 333 |
| 23 | 274 |
| 24 | 751 |
| 25 | 1653 |
| 26 | 1726 |
| 27 | 3032 |