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 | 1 |
| 3 | 1 |
| 4 | -3 |
| 5 | 1 |
| 6 | -1 |
| 7 | 8 |
| 8 | -5 |
| 9 | 1 |
| 10 | 1 |
| 11 | -23 |
| 12 | 19 |
| 13 | -7 |
| 14 | 1 |
| 15 | -1 |
| 16 | 74 |
| 17 | -69 |
| 18 | 34 |
| 19 | -9 |
| 20 | 1 |
| 21 | 1 |
| 22 | -262 |
| 23 | 256 |
| 24 | -147 |
| 25 | 53 |
| 26 | -11 |
| 27 | 1 |
| 28 | -1 |
| 29 | 993 |
| 30 | -986 |
| 31 | 615 |
| 32 | -265 |
| 33 | 76 |
| 34 | -13 |
| 35 | 1 |
| 36 | 1 |
| 37 | -3943 |
| 38 | 3935 |
| 39 | -2571 |
| 40 | 1235 |
| 41 | -431 |
| 42 | 103 |
| 43 | -15 |
| 44 | 1 |
| 45 | -1 |
| 46 | 16178 |
| 47 | -16169 |
| 48 | 10862 |
| 49 | -5591 |
| 50 | 2216 |
| 51 | -653 |
| 52 | 134 |
| 53 | -17 |
| 54 | 1 |
| 55 | 1 |