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 | -2 |
| 5 | -4 |
| 6 | -1 |
| 7 | -1 |
| 8 | 3 |
| 9 | 11 |
| 10 | 0 |
| 11 | 2 |
| 12 | 4 |
| 13 | -2 |
| 14 | -24 |
| 15 | 1 |
| 16 | 1 |
| 17 | -3 |
| 18 | -11 |
| 19 | -7 |
| 20 | 41 |
| 21 | 0 |
| 22 | -2 |
| 23 | -4 |
| 24 | 2 |
| 25 | 24 |
| 26 | 38 |
| 27 | -44 |
| 28 | -1 |
| 29 | -1 |
| 30 | 3 |
| 31 | 11 |
| 32 | 7 |
| 33 | -41 |
| 34 | -117 |
| 35 | -29 |
| 36 | 0 |
| 37 | 2 |
| 38 | 4 |
| 39 | -2 |
| 40 | -24 |
| 41 | -38 |
| 42 | 44 |
| 43 | 278 |
| 44 | 336 |
| 45 | 1 |
| 46 | 1 |
| 47 | -3 |
| 48 | -11 |
| 49 | -7 |
| 50 | 41 |
| 51 | 117 |
| 52 | 29 |
| 53 | -527 |
| 54 | -1199 |
| 55 | 0 |
| 56 | -2 |
| 57 | -4 |
| 58 | 2 |
| 59 | 24 |
| 60 | 38 |
| 61 | -44 |
| 62 | -278 |
| 63 | -336 |
| 64 | 718 |