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 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | -1 |
| 6 | 2 |
| 7 | -1 |
| 8 | 2 |
| 9 | -1 |
| 10 | 3 |
| 11 | -2 |
| 12 | 4 |
| 13 | -2 |
| 14 | 5 |
| 15 | -4 |
| 16 | 6 |
| 17 | -5 |
| 18 | 8 |
| 19 | -6 |
| 20 | 11 |
| 21 | -8 |
| 22 | 13 |
| 23 | -10 |
| 24 | 16 |
| 25 | -14 |
| 26 | 20 |
| 27 | -17 |
| 28 | 24 |
| 29 | -21 |
| 30 | 31 |
| 31 | -26 |
| 32 | 37 |
| 33 | -32 |
| 34 | 44 |
| 35 | -41 |
| 36 | 54 |
| 37 | -49 |
| 38 | 64 |
| 39 | -59 |
| 40 | 79 |
| 41 | -72 |
| 42 | 94 |
| 43 | -86 |
| 44 | 111 |
| 45 | -106 |
| 46 | 132 |
| 47 | -126 |
| 48 | 156 |
| 49 | -149 |
| 50 | 187 |
| 51 | -178 |
| 52 | 219 |
| 53 | -210 |
| 54 | 257 |
| 55 | -251 |
| 56 | 302 |
| 57 | -295 |
| 58 | 352 |