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 | 3 |
| 2 | 3 |
| 3 | -1 |
| 4 | -9 |
| 5 | -12 |
| 6 | -5 |
| 7 | 6 |
| 8 | 15 |
| 9 | 3 |
| 10 | -12 |
| 11 | -12 |
| 12 | 7 |
| 13 | 42 |
| 14 | 30 |
| 15 | 4 |
| 16 | -33 |
| 17 | -48 |
| 18 | 3 |
| 19 | 18 |
| 20 | 36 |
| 21 | -18 |
| 22 | -60 |
| 23 | -24 |
| 24 | -17 |
| 25 | 63 |
| 26 | 42 |
| 27 | -1 |
| 28 | -42 |
| 29 | -84 |
| 30 | 20 |
| 31 | 30 |
| 32 | 63 |
| 33 | 36 |
| 34 | -48 |
| 35 | -24 |
| 36 | -9 |
| 37 | 114 |
| 38 | 90 |
| 39 | -14 |
| 40 | -60 |
| 41 | -120 |
| 42 | -18 |
| 43 | 42 |
| 44 | 84 |
| 45 | -12 |
| 46 | -120 |
| 47 | -48 |
| 48 | 31 |
| 49 | 129 |
| 50 | 63 |
| 51 | 16 |
| 52 | -126 |
| 53 | -156 |
| 54 | -5 |
| 55 | 48 |
| 56 | 102 |
| 57 | -54 |
| 58 | -84 |