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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 0 |
| 7 | 1 |
| 8 | 0 |
| 9 | 1 |
| 10 | 1 |
| 11 | 0 |
| 12 | 2 |
| 13 | -1 |
| 14 | 3 |
| 15 | -1 |
| 16 | 2 |
| 17 | 1 |
| 18 | -1 |
| 19 | 5 |
| 20 | -5 |
| 21 | 8 |
| 22 | -6 |
| 23 | 6 |
| 24 | 0 |
| 25 | -4 |
| 26 | 13 |
| 27 | -18 |
| 28 | 25 |
| 29 | -24 |
| 30 | 21 |
| 31 | -7 |
| 32 | -10 |
| 33 | 36 |
| 34 | -59 |
| 35 | 81 |
| 36 | -87 |
| 37 | 78 |
| 38 | -41 |
| 39 | -17 |
| 40 | 99 |
| 41 | -185 |
| 42 | 264 |
| 43 | -304 |
| 44 | 288 |
| 45 | -188 |
| 46 | 4 |
| 47 | 261 |
| 48 | -564 |
| 49 | 853 |
| 50 | -1040 |
| 51 | 1045 |
| 52 | -783 |
| 53 | 220 |
| 54 | 634 |
| 55 | -1673 |
| 56 | 2719 |