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 | 2 |
| 3 | -4 |
| 4 | 7 |
| 5 | -10 |
| 6 | 11 |
| 7 | -9 |
| 8 | 7 |
| 9 | -11 |
| 10 | 22 |
| 11 | -30 |
| 12 | 24 |
| 13 | -10 |
| 14 | 7 |
| 15 | -20 |
| 16 | 34 |
| 17 | -40 |
| 18 | 41 |
| 19 | -32 |
| 20 | 14 |
| 21 | -16 |
| 22 | 48 |
| 23 | -65 |
| 24 | 40 |
| 25 | -13 |
| 26 | 18 |
| 27 | -42 |
| 28 | 68 |
| 29 | -82 |
| 30 | 71 |
| 31 | -46 |
| 32 | 21 |
| 33 | -12 |
| 34 | 49 |
| 35 | -96 |
| 36 | 75 |
| 37 | -26 |
| 38 | 38 |
| 39 | -82 |
| 40 | 102 |
| 41 | -106 |
| 42 | 92 |
| 43 | -46 |
| 44 | 0 |
| 45 | -18 |
| 46 | 100 |
| 47 | -143 |
| 48 | 103 |
| 49 | -57 |
| 50 | 47 |
| 51 | -70 |
| 52 | 110 |
| 53 | -114 |
| 54 | 96 |
| 55 | -88 |
| 56 | 50 |
| 57 | -40 |
| 58 | 138 |
| 59 | -214 |
| 60 | 140 |
| 61 | -26 |
| 62 | 15 |
| 63 | -66 |