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 | 0 |
| 1 | 2 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | -6 |
| 7 | -3 |
| 8 | -1 |
| 9 | 0 |
| 10 | 0 |
| 11 | -3 |
| 12 | -3 |
| 13 | -2 |
| 14 | -1 |
| 15 | 50 |
| 16 | 25 |
| 17 | 11 |
| 18 | 4 |
| 19 | 1 |
| 20 | 0 |
| 21 | 0 |
| 22 | 25 |
| 23 | 25 |
| 24 | 18 |
| 25 | 11 |
| 26 | 6 |
| 27 | 3 |
| 28 | -854 |
| 29 | -427 |
| 30 | -201 |
| 31 | -88 |
| 32 | -35 |
| 33 | -12 |
| 34 | -3 |
| 35 | 0 |
| 36 | 0 |
| 37 | -427 |
| 38 | -427 |
| 39 | -314 |
| 40 | -201 |
| 41 | -118 |
| 42 | -65 |
| 43 | -34 |
| 44 | -17 |
| 45 | 24930 |
| 46 | 12465 |
| 47 | 6019 |
| 48 | 2796 |
| 49 | 1241 |
| 50 | 520 |
| 51 | 201 |
| 52 | 68 |
| 53 | 17 |
| 54 | 0 |