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 | 1 |
| 1 | -2 |
| 2 | -3 |
| 3 | 2 |
| 4 | 6 |
| 5 | 12 |
| 6 | 1 |
| 7 | -10 |
| 8 | -32 |
| 9 | -46 |
| 10 | -24 |
| 11 | 18 |
| 12 | 96 |
| 13 | 168 |
| 14 | 213 |
| 15 | 124 |
| 16 | -61 |
| 17 | -386 |
| 18 | -734 |
| 19 | -992 |
| 20 | -957 |
| 21 | -386 |
| 22 | 685 |
| 23 | 2288 |
| 24 | 3939 |
| 25 | 5158 |
| 26 | 5012 |
| 27 | 2930 |
| 28 | -1853 |
| 29 | -8888 |
| 30 | -17283 |
| 31 | -24782 |
| 32 | -28312 |
| 33 | -24422 |
| 34 | -9825 |
| 35 | 16674 |
| 36 | 54197 |
| 37 | 96584 |
| 38 | 134729 |
| 39 | 153718 |
| 40 | 138624 |
| 41 | 73438 |
| 42 | -49526 |
| 43 | -228614 |