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 | 0 |
| 5 | 0 |
| 6 | -2 |
| 7 | 2 |
| 8 | 1 |
| 9 | 0 |
| 10 | -4 |
| 11 | 2 |
| 12 | 0 |
| 13 | 3 |
| 14 | -3 |
| 15 | 5 |
| 16 | -6 |
| 17 | -1 |
| 18 | -7 |
| 19 | 16 |
| 20 | -3 |
| 21 | 7 |
| 22 | -19 |
| 23 | 14 |
| 24 | -14 |
| 25 | 11 |
| 26 | -23 |
| 27 | 32 |
| 28 | -16 |
| 29 | 37 |
| 30 | -38 |
| 31 | 32 |
| 32 | -59 |
| 33 | 20 |
| 34 | -47 |
| 35 | 101 |
| 36 | -40 |
| 37 | 70 |
| 38 | -122 |
| 39 | 79 |
| 40 | -87 |
| 41 | 147 |
| 42 | -108 |
| 43 | 119 |
| 44 | -270 |
| 45 | 116 |
| 46 | -199 |
| 47 | 414 |
| 48 | -49 |
| 49 | 353 |
| 50 | -481 |
| 51 | 129 |
| 52 | -687 |
| 53 | 428 |
| 54 | -376 |
| 55 | 1003 |
| 56 | -409 |
| 57 | 759 |
| 58 | -1114 |