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 | 0 |
| 3 | -1 |
| 4 | -1 |
| 5 | -1 |
| 6 | -2 |
| 7 | -3 |
| 8 | -3 |
| 9 | -2 |
| 10 | 0 |
| 11 | 2 |
| 12 | 2 |
| 13 | 0 |
| 14 | -1 |
| 15 | 2 |
| 16 | 8 |
| 17 | 12 |
| 18 | 11 |
| 19 | 8 |
| 20 | 7 |
| 21 | 7 |
| 22 | 5 |
| 23 | 2 |
| 24 | 1 |
| 25 | 2 |
| 26 | 4 |
| 27 | 7 |
| 28 | 7 |
| 29 | -3 |
| 30 | -21 |
| 31 | -34 |
| 32 | -34 |
| 33 | -28 |
| 34 | -28 |
| 35 | -37 |
| 36 | -46 |
| 37 | -42 |
| 38 | -22 |
| 39 | -1 |
| 40 | -1 |
| 41 | -28 |
| 42 | -62 |
| 43 | -75 |
| 44 | -60 |
| 45 | -35 |
| 46 | -16 |
| 47 | 1 |
| 48 | 25 |
| 49 | 53 |
| 50 | 77 |
| 51 | 93 |
| 52 | 97 |
| 53 | 90 |
| 54 | 91 |
| 55 | 121 |
| 56 | 165 |
| 57 | 175 |
| 58 | 129 |
| 59 | 70 |
| 60 | 64 |
| 61 | 127 |
| 62 | 213 |
| 63 | 267 |
| 64 | 273 |
| 65 | 261 |
| 66 | 278 |
| 67 | 329 |
| 68 | 340 |
| 69 | 225 |
| 70 | 11 |
| 71 | -155 |
| 72 | -160 |
| 73 | -50 |
| 74 | 25 |
| 75 | -40 |
| 76 | -223 |
| 77 | -406 |
| 78 | -475 |