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 | -3 |
| 2 | 1 |
| 3 | 7 |
| 4 | -4 |
| 5 | 1 |
| 6 | -15 |
| 7 | 11 |
| 8 | -5 |
| 9 | 1 |
| 10 | 31 |
| 11 | -26 |
| 12 | 16 |
| 13 | -6 |
| 14 | 1 |
| 15 | -63 |
| 16 | 57 |
| 17 | -42 |
| 18 | 22 |
| 19 | -7 |
| 20 | 1 |
| 21 | 127 |
| 22 | -120 |
| 23 | 99 |
| 24 | -64 |
| 25 | 29 |
| 26 | -8 |
| 27 | 1 |
| 28 | -255 |
| 29 | 247 |
| 30 | -219 |
| 31 | 163 |
| 32 | -93 |
| 33 | 37 |
| 34 | -9 |
| 35 | 1 |
| 36 | 511 |
| 37 | -502 |
| 38 | 466 |
| 39 | -382 |
| 40 | 256 |
| 41 | -130 |
| 42 | 46 |
| 43 | -10 |
| 44 | 1 |
| 45 | -1023 |
| 46 | 1013 |
| 47 | -968 |
| 48 | 848 |
| 49 | -638 |
| 50 | 386 |
| 51 | -176 |
| 52 | 56 |
| 53 | -11 |
| 54 | 1 |
| 55 | 2047 |
| 56 | -2036 |
| 57 | 1981 |
| 58 | -1816 |
| 59 | 1486 |
| 60 | -1024 |
| 61 | 562 |
| 62 | -232 |
| 63 | 67 |
| 64 | -12 |
| 65 | 1 |
| 66 | -4095 |
| 67 | 4083 |