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 | 2 |
| 4 | -3 |
| 5 | 2 |
| 6 | 4 |
| 7 | -6 |
| 8 | -2 |
| 9 | 5 |
| 10 | 0 |
| 11 | -3 |
| 12 | 15 |
| 13 | -13 |
| 14 | -19 |
| 15 | 27 |
| 16 | -14 |
| 17 | 4 |
| 18 | 25 |
| 19 | -33 |
| 20 | -3 |
| 21 | 7 |
| 22 | 6 |
| 23 | 15 |
| 24 | 33 |
| 25 | -48 |
| 26 | -58 |
| 27 | 69 |
| 28 | -94 |
| 29 | 119 |
| 30 | 117 |
| 31 | -245 |
| 32 | 60 |
| 33 | -3 |
| 34 | -36 |
| 35 | 170 |
| 36 | 140 |
| 37 | -237 |
| 38 | -305 |
| 39 | 300 |
| 40 | -161 |
| 41 | 248 |
| 42 | 356 |
| 43 | -554 |
| 44 | 8 |
| 45 | -263 |
| 46 | 340 |
| 47 | 469 |
| 48 | -94 |
| 49 | -25 |
| 50 | -945 |
| 51 | 102 |
| 52 | -68 |
| 53 | 1200 |
| 54 | 694 |
| 55 | -1786 |
| 56 | 225 |
| 57 | -974 |