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 | 1 |
| 2 | 2 |
| 3 | 0 |
| 4 | 5 |
| 5 | -3 |
| 6 | 4 |
| 7 | 2 |
| 8 | 6 |
| 9 | -12 |
| 10 | 12 |
| 11 | -54 |
| 12 | 19 |
| 13 | 7 |
| 14 | 26 |
| 15 | -72 |
| 16 | 47 |
| 17 | -309 |
| 18 | 94 |
| 19 | 32 |
| 20 | 126 |
| 21 | -372 |
| 22 | 222 |
| 23 | -1584 |
| 24 | 469 |
| 25 | 157 |
| 26 | 626 |
| 27 | -1872 |
| 28 | 1097 |
| 29 | -7959 |
| 30 | 6 |
| 31 | 4 |
| 32 | 10 |
| 33 | -12 |
| 34 | 22 |
| 35 | -60 |
| 36 | 22 |
| 37 | -4 |
| 38 | 18 |
| 39 | -156 |
| 40 | 6 |
| 41 | -612 |
| 42 | 102 |
| 43 | -44 |
| 44 | 58 |
| 45 | -876 |
| 46 | -74 |
| 47 | -3372 |
| 48 | 502 |
| 49 | -244 |
| 50 | 258 |
| 51 | -4476 |
| 52 | -474 |
| 53 | -17172 |
| 54 | 2502 |
| 55 | -1244 |
| 56 | 1258 |
| 57 | -22476 |
| 58 | -2474 |
| 59 | -86172 |
| 60 | 41 |
| 61 | 25 |
| 62 | 66 |
| 63 | -96 |
| 64 | 141 |
| 65 | -459 |
| 66 | 148 |
| 67 | -46 |
| 68 | 102 |