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 | -2 |
| 3 | 2 |
| 4 | 2 |
| 5 | 6 |
| 6 | -2 |
| 7 | 2 |
| 8 | -6 |
| 9 | -10 |
| 10 | -2 |
| 11 | -6 |
| 12 | -6 |
| 13 | 6 |
| 14 | 22 |
| 15 | -6 |
| 16 | 26 |
| 17 | 14 |
| 18 | 22 |
| 19 | -6 |
| 20 | -14 |
| 21 | -2 |
| 22 | -10 |
| 23 | -46 |
| 24 | -46 |
| 25 | -50 |
| 26 | -18 |
| 27 | 18 |
| 28 | -78 |
| 29 | 22 |
| 30 | 14 |
| 31 | 82 |
| 32 | 42 |
| 33 | 166 |
| 34 | 14 |
| 35 | 42 |
| 36 | 170 |
| 37 | 118 |
| 38 | 6 |
| 39 | 106 |
| 40 | -150 |
| 41 | -66 |
| 42 | -122 |
| 43 | -118 |
| 44 | -62 |
| 45 | -370 |
| 46 | -282 |
| 47 | -350 |
| 48 | -126 |
| 49 | -354 |
| 50 | -2 |
| 51 | -94 |
| 52 | 226 |
| 53 | -250 |
| 54 | 30 |
| 55 | 450 |
| 56 | 730 |
| 57 | 342 |
| 58 | 894 |
| 59 | 474 |
| 60 | 890 |
| 61 | 358 |
| 62 | 758 |
| 63 | 58 |
| 64 | 1210 |
| 65 | 782 |
| 66 | -778 |
| 67 | 26 |
| 68 | -270 |
| 69 | -1250 |