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 | 2 |
| 2 | 4 |
| 3 | -8 |
| 4 | 16 |
| 5 | -24 |
| 6 | 20 |
| 7 | -7 |
| 8 | 10 |
| 9 | -31 |
| 10 | 32 |
| 11 | -24 |
| 12 | 40 |
| 13 | -26 |
| 14 | -16 |
| 15 | -2 |
| 16 | 34 |
| 17 | -36 |
| 18 | 38 |
| 19 | 2 |
| 20 | -20 |
| 21 | -46 |
| 22 | 68 |
| 23 | -23 |
| 24 | 26 |
| 25 | -52 |
| 26 | 26 |
| 27 | -29 |
| 28 | 28 |
| 29 | 0 |
| 30 | 32 |
| 31 | 2 |
| 32 | -32 |
| 33 | 0 |
| 34 | -36 |
| 35 | -2 |
| 36 | 112 |
| 37 | -74 |
| 38 | -40 |
| 39 | -2 |
| 40 | 40 |
| 41 | 0 |
| 42 | 44 |
| 43 | -43 |
| 44 | 46 |
| 45 | -139 |
| 46 | 140 |
| 47 | -47 |
| 48 | 0 |
| 49 | 51 |
| 50 | -102 |
| 51 | -2 |
| 52 | 106 |
| 53 | 2 |
| 54 | -110 |
| 55 | 112 |
| 56 | -56 |
| 57 | -118 |
| 58 | 176 |
| 59 | -120 |