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 | 1 |
| 3 | -1 |
| 4 | -2 |
| 5 | 1 |
| 6 | 5 |
| 7 | -3 |
| 8 | -3 |
| 9 | 1 |
| 10 | 1 |
| 11 | 20 |
| 12 | -6 |
| 13 | -4 |
| 14 | 1 |
| 15 | -41 |
| 16 | 5 |
| 17 | 50 |
| 18 | -10 |
| 19 | -5 |
| 20 | 1 |
| 21 | 31 |
| 22 | -246 |
| 23 | 15 |
| 24 | 100 |
| 25 | -15 |
| 26 | -6 |
| 27 | 1 |
| 28 | 461 |
| 29 | 217 |
| 30 | -861 |
| 31 | 35 |
| 32 | 175 |
| 33 | -21 |
| 34 | -7 |
| 35 | 1 |
| 36 | -895 |
| 37 | 3688 |
| 38 | 868 |
| 39 | -2296 |
| 40 | 70 |
| 41 | 280 |
| 42 | -28 |
| 43 | -8 |
| 44 | 1 |