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 | -2 |
| 2 | 1 |
| 3 | 5 |
| 4 | -4 |
| 5 | 1 |
| 6 | -15 |
| 7 | 14 |
| 8 | -6 |
| 9 | 1 |
| 10 | 51 |
| 11 | -50 |
| 12 | 27 |
| 13 | -8 |
| 14 | 1 |
| 15 | -188 |
| 16 | 187 |
| 17 | -113 |
| 18 | 44 |
| 19 | -10 |
| 20 | 1 |
| 21 | 731 |
| 22 | -730 |
| 23 | 468 |
| 24 | -212 |
| 25 | 65 |
| 26 | -12 |
| 27 | 1 |
| 28 | -2950 |
| 29 | 2949 |
| 30 | -1956 |
| 31 | 970 |
| 32 | -355 |
| 33 | 90 |
| 34 | -14 |
| 35 | 1 |
| 36 | 12235 |
| 37 | -12234 |
| 38 | 8291 |
| 39 | -4356 |
| 40 | 1785 |
| 41 | -550 |
| 42 | 119 |
| 43 | -16 |
| 44 | 1 |
| 45 | -51822 |
| 46 | 51821 |
| 47 | -35643 |
| 48 | 19474 |
| 49 | -8612 |
| 50 | 3021 |