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 | 20 |
| 1 | 19 |
| 2 | 17 |
| 3 | 14 |
| 4 | 10 |
| 5 | 5 |
| 6 | -1 |
| 7 | 6 |
| 8 | -2 |
| 9 | 7 |
| 10 | -3 |
| 11 | 8 |
| 12 | -4 |
| 13 | 9 |
| 14 | -5 |
| 15 | -20 |
| 16 | -36 |
| 17 | -19 |
| 18 | -37 |
| 19 | -18 |
| 20 | 2 |
| 21 | 23 |
| 22 | 1 |
| 23 | -22 |
| 24 | -46 |
| 25 | -21 |
| 26 | -47 |
| 27 | -74 |
| 28 | -102 |
| 29 | -73 |
| 30 | -43 |
| 31 | -12 |
| 32 | -44 |
| 33 | -11 |
| 34 | -45 |
| 35 | -10 |
| 36 | 26 |
| 37 | 63 |
| 38 | 25 |
| 39 | -14 |
| 40 | -54 |
| 41 | -13 |
| 42 | 29 |
| 43 | 72 |
| 44 | 28 |
| 45 | -17 |
| 46 | -63 |
| 47 | -16 |
| 48 | 32 |
| 49 | 81 |
| 50 | 31 |
| 51 | 82 |
| 52 | 30 |
| 53 | -23 |
| 54 | -77 |
| 55 | -132 |
| 56 | -76 |
| 57 | -133 |