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 | -1 |
| 3 | 1 |
| 4 | -1 |
| 5 | -1 |
| 6 | 1 |
| 7 | 7 |
| 8 | -2 |
| 9 | -1 |
| 10 | 1 |
| 11 | -13 |
| 12 | 12 |
| 13 | -3 |
| 14 | -1 |
| 15 | 1 |
| 16 | -17 |
| 17 | -22 |
| 18 | 18 |
| 19 | -4 |
| 20 | -1 |
| 21 | 1 |
| 22 | 199 |
| 23 | -45 |
| 24 | -35 |
| 25 | 25 |
| 26 | -5 |
| 27 | -1 |
| 28 | 1 |
| 29 | -605 |
| 30 | 465 |
| 31 | -84 |
| 32 | -53 |
| 33 | 33 |
| 34 | -6 |
| 35 | -1 |
| 36 | 1 |
| 37 | -225 |
| 38 | -1449 |
| 39 | 910 |
| 40 | -133 |
| 41 | -77 |
| 42 | 42 |
| 43 | -7 |
| 44 | -1 |
| 45 | 1 |
| 46 | 11703 |
| 47 | -864 |
| 48 | -3094 |
| 49 | 1594 |
| 50 | -190 |
| 51 | -108 |
| 52 | 52 |
| 53 | -8 |
| 54 | -1 |
| 55 | 1 |
| 56 | -59317 |
| 57 | 33780 |
| 58 | -1380 |
| 59 | -6027 |
| 60 | 2583 |
| 61 | -252 |
| 62 | -147 |
| 63 | 63 |
| 64 | -9 |
| 65 | -1 |
| 66 | 1 |
| 67 | 83143 |
| 68 | -179398 |
| 69 | 78567 |
| 70 | -771 |
| 71 | -10899 |
| 72 | 3948 |
| 73 | -315 |
| 74 | -195 |
| 75 | 75 |
| 76 | -10 |
| 77 | -1 |
| 78 | 1 |
| 79 | 991671 |
| 80 | 271073 |
| 81 | -461978 |
| 82 | 159115 |
| 83 | 2882 |
| 84 | -18546 |
| 85 | 5764 |
| 86 | -374 |
| 87 | -253 |
| 88 | 88 |
| 89 | -11 |
| 90 | -1 |
| 91 | 1 |