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) |
|---|---|
| 8 | 1 |
| 9 | -8 |
| 10 | 28 |
| 11 | -56 |
| 12 | 62 |
| 13 | 0 |
| 14 | -148 |
| 15 | 328 |
| 16 | -419 |
| 17 | 280 |
| 18 | 140 |
| 19 | -728 |
| 20 | 1232 |
| 21 | -1336 |
| 22 | 848 |
| 23 | 224 |
| 24 | -1582 |
| 25 | 2688 |
| 26 | -3072 |
| 27 | 2408 |
| 28 | -742 |
| 29 | -1568 |
| 30 | 3836 |
| 31 | -5264 |
| 32 | 5306 |
| 33 | -3744 |
| 34 | 924 |
| 35 | 2576 |
| 36 | -5686 |
| 37 | 7792 |
| 38 | -8092 |
| 39 | 6272 |
| 40 | -2751 |
| 41 | -1848 |
| 42 | 6008 |
| 43 | -9296 |
| 44 | 10556 |
| 45 | -9800 |
| 46 | 6692 |
| 47 | -2240 |
| 48 | -3206 |
| 49 | 8168 |
| 50 | -11524 |