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) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 1 |
| 4 | 0 |
| 5 | -3 |
| 6 | 1 |
| 7 | -1 |
| 8 | 1 |
| 9 | 3 |
| 10 | -5 |
| 11 | -1 |
| 12 | 4 |
| 13 | 3 |
| 14 | -3 |
| 15 | -7 |
| 16 | 8 |
| 17 | 1 |
| 18 | -9 |
| 19 | 7 |
| 20 | 8 |
| 21 | -13 |
| 22 | -12 |
| 23 | 27 |
| 24 | 7 |
| 25 | -19 |
| 26 | -14 |
| 27 | 11 |
| 28 | -17 |
| 29 | -25 |
| 30 | 198 |
| 31 | -81 |
| 32 | -312 |
| 33 | 89 |
| 34 | 326 |
| 35 | 325 |
| 36 | -739 |
| 37 | -275 |
| 38 | 572 |
| 39 | -255 |
| 40 | 1287 |
| 41 | -453 |
| 42 | -2062 |
| 43 | -583 |
| 44 | 2155 |
| 45 | 5985 |
| 46 | -6725 |
| 47 | -6661 |
| 48 | 6968 |
| 49 | 3045 |
| 50 | 3876 |
| 51 | -7205 |
| 52 | -2773 |
| 53 | -5447 |
| 54 | -4902 |