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) |
|---|---|
| 3 | 1 |
| 4 | 0 |
| 5 | 3 |
| 6 | -11 |
| 7 | 6 |
| 8 | -17 |
| 9 | 9 |
| 10 | 7 |
| 11 | -58 |
| 12 | 20 |
| 13 | -19 |
| 14 | -41 |
| 15 | 21 |
| 16 | 15 |
| 17 | 0 |
| 18 | -118 |
| 19 | 40 |
| 20 | -34 |
| 21 | -71 |
| 22 | 48 |
| 23 | -40 |
| 24 | 27 |
| 25 | 22 |
| 26 | -97 |
| 27 | -101 |
| 28 | 51 |
| 29 | -107 |
| 30 | 54 |
| 31 | 80 |
| 32 | -318 |
| 33 | 43 |
| 34 | -274 |
| 35 | 111 |
| 36 | -596 |
| 37 | 100 |
| 38 | 0 |
| 39 | -82 |
| 40 | 55 |
| 41 | 0 |
| 42 | -358 |
| 43 | 144 |
| 44 | -764 |
| 45 | 96 |
| 46 | -197 |
| 47 | 165 |
| 48 | 0 |
| 49 | -446 |
| 50 | -227 |
| 51 | 114 |
| 52 | 77 |
| 53 | -478 |
| 54 | 192 |
| 55 | -168 |
| 56 | 0 |
| 57 | 0 |
| 58 | -538 |
| 59 | 180 |
| 60 | -139 |