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 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 1 |
| 6 | 4 |
| 7 | 1 |
| 8 | 0 |
| 9 | 3 |
| 10 | 8 |
| 11 | 3 |
| 12 | 16 |
| 13 | 5 |
| 14 | 16 |
| 15 | 15 |
| 16 | 0 |
| 17 | 17 |
| 18 | 48 |
| 19 | 27 |
| 20 | 128 |
| 21 | 63 |
| 22 | 192 |
| 23 | 89 |
| 24 | 0 |
| 25 | 205 |
| 26 | 637 |
| 27 | 171 |
| 28 | 1011 |
| 29 | 565 |