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 | 4 |
| 4 | -2 |
| 5 | 8 |
| 6 | 4 |
| 7 | -16 |
| 8 | -2 |
| 9 | -14 |
| 10 | 8 |
| 11 | 20 |
| 12 | 4 |
| 13 | 24 |
| 14 | -16 |
| 15 | -16 |
| 16 | -2 |
| 17 | -36 |
| 18 | -14 |
| 19 | 36 |
| 20 | 8 |
| 21 | 32 |
| 22 | 20 |
| 23 | -48 |
| 24 | 4 |
| 25 | -42 |
| 26 | 24 |
| 27 | 40 |
| 28 | -16 |
| 29 | 56 |
| 30 | -16 |
| 31 | -64 |
| 32 | -2 |
| 33 | -40 |
| 34 | -36 |
| 35 | 64 |
| 36 | -14 |
| 37 | 72 |
| 38 | 36 |
| 39 | -48 |
| 40 | 8 |
| 41 | -84 |
| 42 | 32 |
| 43 | 84 |
| 44 | 20 |
| 45 | 56 |
| 46 | -48 |
| 47 | -96 |
| 48 | 4 |
| 49 | -114 |
| 50 | -42 |
| 51 | 72 |
| 52 | 24 |
| 53 | 104 |
| 54 | 40 |
| 55 | -80 |
| 56 | -16 |
| 57 | -72 |
| 58 | 56 |
| 59 | 116 |
| 60 | -16 |