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 | 1 |
| 2 | 1 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | -1 |
| 7 | -2 |
| 8 | -2 |
| 9 | -2 |
| 10 | -2 |
| 11 | -3 |
| 12 | -3 |
| 13 | -2 |
| 14 | -2 |
| 15 | -2 |
| 16 | -1 |
| 17 | 1 |
| 18 | 2 |
| 19 | 2 |
| 20 | 4 |
| 21 | 6 |
| 22 | 7 |
| 23 | 8 |
| 24 | 10 |
| 25 | 13 |
| 26 | 14 |
| 27 | 14 |
| 28 | 15 |
| 29 | 17 |
| 30 | 17 |
| 31 | 15 |
| 32 | 15 |
| 33 | 16 |
| 34 | 14 |
| 35 | 10 |
| 36 | 8 |
| 37 | 6 |
| 38 | 1 |
| 39 | -5 |
| 40 | -10 |
| 41 | -14 |
| 42 | -21 |
| 43 | -31 |
| 44 | -38 |
| 45 | -43 |
| 46 | -53 |
| 47 | -64 |
| 48 | -71 |
| 49 | -77 |
| 50 | -86 |
| 51 | -97 |
| 52 | -104 |
| 53 | -108 |
| 54 | -115 |
| 55 | -124 |
| 56 | -127 |
| 57 | -125 |
| 58 | -127 |
| 59 | -130 |
| 60 | -125 |
| 61 | -116 |