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 | -2 |
| 4 | -2 |
| 5 | -6 |
| 6 | -4 |
| 7 | -10 |
| 8 | -10 |
| 9 | -10 |
| 10 | -6 |
| 11 | -16 |
| 12 | -16 |
| 13 | -28 |
| 14 | -22 |
| 15 | -14 |
| 16 | -14 |
| 17 | -30 |
| 18 | -30 |
| 19 | -48 |
| 20 | -48 |
| 21 | -36 |
| 22 | -26 |
| 23 | -48 |
| 24 | -48 |
| 25 | -48 |
| 26 | -36 |
| 27 | -36 |
| 28 | -36 |
| 29 | -64 |
| 30 | -72 |
| 31 | -102 |
| 32 | -102 |
| 33 | -82 |
| 34 | -66 |
| 35 | -42 |
| 36 | -42 |
| 37 | -78 |
| 38 | -60 |
| 39 | -36 |
| 40 | -36 |
| 41 | -76 |
| 42 | -88 |
| 43 | -130 |
| 44 | -130 |
| 45 | -130 |
| 46 | -108 |
| 47 | -154 |
| 48 | -154 |
| 49 | -154 |
| 50 | -154 |
| 51 | -122 |
| 52 | -122 |
| 53 | -174 |
| 54 | -174 |
| 55 | -134 |
| 56 | -134 |
| 57 | -98 |
| 58 | -70 |
| 59 | -128 |