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 | -11 |
| 2 | 44 |
| 3 | -55 |
| 4 | -110 |
| 5 | 374 |
| 6 | -143 |
| 7 | -462 |
| 8 | 55 |
| 9 | 495 |
| 10 | 1287 |
| 11 | -2069 |
| 12 | -902 |
| 13 | 1210 |
| 14 | -275 |
| 15 | 3795 |
| 16 | -1507 |
| 17 | -2431 |
| 18 | -3575 |
| 19 | -385 |
| 20 | 8690 |
| 21 | -1661 |
| 22 | 1143 |
| 23 | 1265 |
| 24 | -4290 |
| 25 | -12716 |
| 26 | 2299 |
| 27 | 11440 |
| 28 | 3905 |
| 29 | 8635 |
| 30 | -10472 |
| 31 | 6105 |
| 32 | -20548 |
| 33 | -1540 |
| 34 | 8690 |
| 35 | -24904 |
| 36 | 29634 |
| 37 | 25003 |
| 38 | 8470 |
| 39 | -23320 |
| 40 | -18183 |