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 | 2 |
| 4 | -2 |
| 5 | 0 |
| 6 | 1 |
| 7 | 2 |
| 8 | -4 |
| 9 | -3 |
| 10 | 7 |
| 11 | 4 |
| 12 | -4 |
| 13 | -14 |
| 14 | 6 |
| 15 | 10 |
| 16 | 12 |
| 17 | -14 |
| 18 | 0 |
| 19 | -26 |
| 20 | 3 |
| 21 | 7 |
| 22 | 60 |
| 23 | 11 |
| 24 | -27 |
| 25 | -99 |
| 26 | -26 |
| 27 | 6 |
| 28 | 126 |
| 29 | 94 |
| 30 | 58 |
| 31 | -87 |
| 32 | -180 |
| 33 | -201 |
| 34 | -46 |
| 35 | 145 |
| 36 | 282 |
| 37 | 330 |
| 38 | 142 |
| 39 | -21 |
| 40 | -515 |
| 41 | -573 |
| 42 | -716 |
| 43 | -15 |
| 44 | 423 |
| 45 | 1519 |
| 46 | 1128 |
| 47 | 1197 |
| 48 | -783 |
| 49 | -1378 |
| 50 | -3264 |
| 51 | -1892 |
| 52 | -1574 |
| 53 | 2155 |
| 54 | 2679 |
| 55 | 6075 |
| 56 | 3376 |
| 57 | 3243 |