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 | -1 |
| 3 | -2 |
| 4 | -7 |
| 5 | 16 |
| 6 | 2 |
| 7 | -7 |
| 8 | 15 |
| 9 | -23 |
| 10 | -16 |
| 11 | -8 |
| 12 | 14 |
| 13 | 28 |
| 14 | 7 |
| 15 | -32 |
| 16 | 41 |
| 17 | 54 |
| 18 | 23 |
| 19 | -110 |
| 20 | -112 |
| 21 | 14 |
| 22 | 8 |
| 23 | 48 |
| 24 | -30 |
| 25 | 131 |
| 26 | -28 |
| 27 | 100 |
| 28 | 49 |
| 29 | -110 |
| 30 | 32 |
| 31 | 12 |
| 32 | -161 |
| 33 | 16 |
| 34 | -54 |
| 35 | -112 |
| 36 | 161 |
| 37 | -246 |
| 38 | 110 |
| 39 | -56 |
| 40 | 240 |
| 41 | 182 |
| 42 | -14 |
| 43 | 128 |
| 44 | 56 |
| 45 | -368 |
| 46 | -48 |
| 47 | 324 |
| 48 | -82 |
| 49 | 49 |
| 50 | -131 |
| 51 | -108 |
| 52 | -196 |
| 53 | -162 |
| 54 | -100 |
| 55 | -128 |