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 | -2 |
| 5 | -3 |
| 6 | 7 |
| 7 | -12 |
| 8 | 8 |
| 9 | 6 |
| 10 | 7 |
| 11 | -15 |
| 12 | 18 |
| 13 | -14 |
| 14 | 41 |
| 15 | 3 |
| 16 | -12 |
| 17 | -16 |
| 18 | -4 |
| 19 | -22 |
| 20 | 9 |
| 21 | 63 |
| 22 | 33 |
| 23 | -30 |
| 24 | -49 |
| 25 | -26 |
| 26 | 28 |
| 27 | -10 |
| 28 | 15 |
| 29 | -39 |
| 30 | -2 |
| 31 | -32 |
| 32 | 6 |
| 33 | 103 |
| 34 | 13 |
| 35 | 30 |
| 36 | -69 |
| 37 | -19 |
| 38 | 31 |
| 39 | 67 |
| 40 | -68 |
| 41 | -44 |
| 42 | -218 |
| 43 | -23 |
| 44 | 39 |
| 45 | 36 |
| 46 | 70 |
| 47 | -52 |
| 48 | 38 |
| 49 | 88 |
| 50 | 67 |
| 51 | 65 |
| 52 | 52 |
| 53 | -55 |
| 54 | -21 |
| 55 | 20 |
| 56 | -294 |
| 57 | 147 |
| 58 | 69 |
| 59 | -66 |
| 60 | -52 |
| 61 | -31 |
| 62 | 35 |
| 63 | -144 |
| 64 | 48 |
| 65 | 16 |
| 66 | -240 |
| 67 | -37 |
| 68 | 93 |
| 69 | 165 |
| 70 | -180 |
| 71 | -76 |
| 72 | 78 |