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 | 0 |
| 2 | 1 |
| 3 | -1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 4 |
| 7 | -14 |
| 8 | 10 |
| 9 | 6 |
| 10 | -15 |
| 11 | 83 |
| 12 | -157 |
| 13 | 89 |
| 14 | 24 |
| 15 | 56 |
| 16 | -424 |
| 17 | 1266 |
| 18 | -1724 |
| 19 | 826 |
| 20 | 120 |
| 21 | -185 |
| 22 | 1887 |
| 23 | -8038 |
| 24 | 17642 |
| 25 | -19593 |
| 26 | 8287 |
| 27 | 720 |
| 28 | 204 |
| 29 | -4976 |
| 30 | 36226 |
| 31 | -126944 |
| 32 | 239576 |
| 33 | -234688 |
| 34 | 90602 |
| 35 | 5040 |