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) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | -1 |
| 4 | -1 |
| 5 | -1 |
| 6 | 1 |
| 7 | -1 |
| 8 | 2 |
| 9 | 1 |
| 10 | -1 |
| 11 | -2 |
| 12 | 7 |
| 13 | -3 |
| 14 | -2 |
| 15 | 1 |
| 16 | -1 |
| 17 | 7 |
| 18 | -13 |
| 19 | 5 |
| 20 | 2 |
| 21 | -1 |
| 22 | -1 |
| 23 | 12 |
| 24 | -34 |
| 25 | 30 |
| 26 | -6 |
| 27 | -3 |
| 28 | 1 |
| 29 | 0 |
| 30 | 5 |
| 31 | -30 |
| 32 | 60 |
| 33 | -45 |
| 34 | 9 |
| 35 | 3 |
| 36 | -1 |
| 37 | 1 |
| 38 | 1 |
| 39 | -41 |
| 40 | 130 |
| 41 | -155 |
| 42 | 78 |
| 43 | -10 |
| 44 | -4 |
| 45 | 1 |
| 46 | 1 |
| 47 | -6 |
| 48 | -3 |
| 49 | 87 |
| 50 | -220 |
| 51 | 229 |
| 52 | -106 |
| 53 | 14 |
| 54 | 4 |
| 55 | -1 |
| 56 | 2 |
| 57 | -19 |
| 58 | 45 |
| 59 | 54 |
| 60 | -378 |
| 61 | 609 |
| 62 | -455 |
| 63 | 160 |
| 64 | -15 |
| 65 | -5 |
| 66 | 1 |
| 67 | 1 |
| 68 | -15 |
| 69 | 73 |
| 70 | -123 |
| 71 | -89 |
| 72 | 609 |
| 73 | -889 |
| 74 | 615 |
| 75 | -205 |
| 76 | 20 |
| 77 | 5 |
| 78 | -1 |
| 79 | 1 |
| 80 | -24 |
| 81 | 164 |
| 82 | -460 |