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 | 1 |
| 4 | 2 |
| 5 | 0 |
| 6 | 6 |
| 7 | -3 |
| 8 | 7 |
| 9 | -2 |
| 10 | 8 |
| 11 | -14 |
| 12 | -10 |
| 13 | 15 |
| 14 | 4 |
| 15 | -17 |
| 16 | -24 |
| 17 | -16 |
| 18 | -11 |
| 19 | -6 |
| 20 | 13 |
| 21 | 20 |
| 22 | 36 |
| 23 | -15 |
| 24 | -8 |
| 25 | -44 |
| 26 | 46 |
| 27 | -28 |
| 28 | 39 |
| 29 | 10 |
| 30 | -41 |
| 31 | -23 |
| 32 | 12 |
| 33 | 25 |
| 34 | 38 |
| 35 | -27 |
| 36 | 55 |
| 37 | -57 |
| 38 | -74 |
| 39 | 76 |
| 40 | 63 |
| 41 | -65 |
| 42 | 33 |
| 43 | -52 |
| 44 | -35 |
| 45 | 18 |
| 46 | -18 |
| 47 | 96 |
| 48 | -81 |
| 49 | 62 |
| 50 | -104 |
| 51 | 106 |
| 52 | 87 |
| 53 | 22 |
| 54 | -114 |
| 55 | -70 |
| 56 | 24 |
| 57 | 49 |
| 58 | 74 |
| 59 | 126 |
| 60 | -51 |
| 61 | 103 |
| 62 | 80 |
| 63 | 28 |
| 64 | -113 |
| 65 | 57 |