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 | 0 |
| 1 | 1 |
| 2 | -2 |
| 3 | 3 |
| 4 | 4 |
| 5 | -11 |
| 6 | -6 |
| 7 | 7 |
| 8 | -8 |
| 9 | 9 |
| 10 | 10 |
| 11 | -5 |
| 12 | 12 |
| 13 | 13 |
| 14 | -38 |
| 15 | -33 |
| 16 | 16 |
| 17 | -29 |
| 18 | -18 |
| 19 | 25 |
| 20 | -20 |
| 21 | 21 |
| 22 | 34 |
| 23 | -35 |
| 24 | -24 |
| 25 | 19 |
| 26 | -26 |
| 27 | 27 |
| 28 | 28 |
| 29 | -17 |
| 30 | 30 |
| 31 | 37 |
| 32 | -32 |
| 33 | -15 |
| 34 | 22 |
| 35 | -23 |
| 36 | 36 |
| 37 | 31 |
| 38 | -14 |
| 39 | 39 |
| 40 | 40 |
| 41 | -119 |
| 42 | -114 |
| 43 | 43 |
| 44 | -92 |
| 45 | -99 |
| 46 | 70 |
| 47 | -65 |
| 48 | 48 |
| 49 | 97 |
| 50 | -110 |
| 51 | -87 |
| 52 | 52 |
| 53 | -83 |
| 54 | -54 |
| 55 | 79 |
| 56 | -56 |
| 57 | 75 |
| 58 | 106 |
| 59 | -101 |