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 | 0 |
| 3 | 0 |
| 4 | 2 |
| 5 | 0 |
| 6 | -1 |
| 7 | 2 |
| 8 | 3 |
| 9 | 0 |
| 10 | -3 |
| 11 | 4 |
| 12 | 5 |
| 13 | 4 |
| 14 | 0 |
| 15 | -9 |
| 16 | 14 |
| 17 | 15 |
| 18 | 9 |
| 19 | 5 |
| 20 | 0 |
| 21 | -33 |
| 22 | 68 |
| 23 | 65 |
| 24 | 34 |
| 25 | 14 |
| 26 | 6 |
| 27 | 0 |
| 28 | -153 |
| 29 | 404 |
| 30 | 359 |
| 31 | 174 |
| 32 | 63 |
| 33 | 20 |
| 34 | 7 |
| 35 | 0 |
| 36 | -873 |
| 37 | 2804 |
| 38 | 2375 |
| 39 | 1098 |
| 40 | 371 |
| 41 | 104 |
| 42 | 27 |
| 43 | 8 |
| 44 | 0 |
| 45 | -5913 |
| 46 | 22244 |
| 47 | 18215 |
| 48 | 8154 |
| 49 | 2639 |
| 50 | 692 |
| 51 | 159 |
| 52 | 35 |
| 53 | 9 |
| 54 | 0 |
| 55 | -46233 |
| 56 | 198644 |
| 57 | 158615 |
| 58 | 69354 |
| 59 | 21791 |
| 60 | 5480 |
| 61 | 1179 |
| 62 | 230 |
| 63 | 44 |
| 64 | 10 |
| 65 | 0 |