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 | 1 |
| 3 | 2 |
| 4 | -1 |
| 5 | 4 |
| 6 | -3 |
| 7 | 8 |
| 8 | 0 |
| 9 | -1 |
| 10 | -6 |
| 11 | 15 |
| 12 | -14 |
| 13 | 9 |
| 14 | 4 |
| 15 | 13 |
| 16 | -25 |
| 17 | 26 |
| 18 | -25 |
| 19 | 24 |
| 20 | -6 |
| 21 | -5 |
| 22 | -12 |
| 23 | 43 |
| 24 | -22 |
| 25 | -5 |
| 26 | 29 |
| 27 | -10 |
| 28 | -34 |
| 29 | 43 |
| 30 | -42 |
| 31 | 69 |
| 32 | -43 |
| 33 | -6 |
| 34 | 10 |
| 35 | 43 |
| 36 | -72 |
| 37 | 23 |
| 38 | 9 |
| 39 | 40 |
| 40 | -71 |
| 41 | 60 |
| 42 | -59 |
| 43 | 50 |
| 44 | 23 |
| 45 | -46 |
| 46 | -26 |
| 47 | 113 |
| 48 | -72 |
| 49 | 29 |
| 50 | -30 |
| 51 | 21 |
| 52 | -60 |
| 53 | 119 |
| 54 | -77 |
| 55 | 58 |
| 56 | -54 |
| 57 | -13 |
| 58 | -32 |
| 59 | 119 |
| 60 | -118 |