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 | 2 |
| 3 | 2 |
| 4 | -4 |
| 5 | 3 |
| 6 | -2 |
| 7 | 8 |
| 8 | -9 |
| 9 | 4 |
| 10 | 3 |
| 11 | -12 |
| 12 | 21 |
| 13 | -16 |
| 14 | 5 |
| 15 | -3 |
| 16 | 18 |
| 17 | -39 |
| 18 | 44 |
| 19 | -25 |
| 20 | 6 |
| 21 | 4 |
| 22 | -24 |
| 23 | 66 |
| 24 | -96 |
| 25 | 80 |
| 26 | -36 |
| 27 | 7 |
| 28 | -4 |
| 29 | 32 |
| 30 | -102 |
| 31 | 184 |
| 32 | -200 |
| 33 | 132 |
| 34 | -49 |
| 35 | 8 |
| 36 | 5 |
| 37 | -40 |
| 38 | 150 |
| 39 | -320 |
| 40 | 430 |
| 41 | -372 |
| 42 | 203 |
| 43 | -64 |
| 44 | 9 |
| 45 | -5 |
| 46 | 50 |
| 47 | -210 |
| 48 | 520 |
| 49 | -830 |
| 50 | 888 |
| 51 | -637 |
| 52 | 296 |
| 53 | -81 |
| 54 | 10 |
| 55 | 6 |
| 56 | -60 |
| 57 | 285 |
| 58 | -800 |
| 59 | 1480 |
| 60 | -1884 |
| 61 | 1673 |
| 62 | -1024 |
| 63 | 414 |
| 64 | -100 |
| 65 | 11 |