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 | 0 |
| 3 | 0 |
| 4 | -2 |
| 5 | -2 |
| 6 | -2 |
| 7 | -2 |
| 8 | 4 |
| 9 | 10 |
| 10 | 16 |
| 11 | 22 |
| 12 | 8 |
| 13 | -26 |
| 14 | -80 |
| 15 | -154 |
| 16 | -178 |
| 17 | -82 |
| 18 | 204 |
| 19 | 750 |
| 20 | 1374 |
| 21 | 1642 |
| 22 | 868 |
| 23 | -1886 |
| 24 | -6886 |
| 25 | -12802 |
| 26 | -15784 |
| 27 | -8538 |
| 28 | 17166 |
| 29 | 64554 |
| 30 | 122476 |
| 31 | 152602 |
| 32 | 86056 |
| 33 | -157642 |
| 34 | -616456 |
| 35 | -1183666 |
| 36 | -1493402 |
| 37 | -878250 |
| 38 | 1468080 |