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 | 2 |
| 1 | -1 |
| 2 | 2 |
| 3 | -4 |
| 4 | 7 |
| 5 | -8 |
| 6 | -2 |
| 7 | 41 |
| 8 | -134 |
| 9 | 296 |
| 10 | -485 |
| 11 | 512 |
| 12 | 82 |
| 13 | -2107 |
| 14 | 6562 |
| 15 | -13852 |
| 16 | 21871 |
| 17 | -22600 |
| 18 | -2186 |
| 19 | 83105 |
| 20 | -255878 |
| 21 | 531440 |
| 22 | -826685 |
| 23 | 846368 |
| 24 | 59050 |
| 25 | -2952451 |
| 26 | 9034498 |
| 27 | -18600436 |
| 28 | 28697815 |
| 29 | -29229256 |
| 30 | -1594322 |
| 31 | 98848025 |
| 32 | -301327046 |
| 33 | 617003000 |
| 34 | -947027861 |
| 35 | 961376768 |
| 36 | 43046722 |