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 | -10 |
| 2 | 35 |
| 3 | -30 |
| 4 | -105 |
| 5 | 238 |
| 6 | 0 |
| 7 | -260 |
| 8 | -165 |
| 9 | 140 |
| 10 | 1054 |
| 11 | -770 |
| 12 | -595 |
| 13 | 0 |
| 14 | -715 |
| 15 | 2162 |
| 16 | 455 |
| 17 | 0 |
| 18 | -2380 |
| 19 | -1820 |
| 20 | 2401 |
| 21 | -680 |
| 22 | 1495 |
| 23 | 3080 |
| 24 | 1615 |
| 25 | -6958 |
| 26 | -1925 |
| 27 | 0 |
| 28 | 0 |
| 29 | 5100 |
| 30 | -1442 |
| 31 | 8330 |
| 32 | -5355 |
| 33 | 1330 |
| 34 | 0 |
| 35 | -16790 |
| 36 | 0 |
| 37 | 8190 |
| 38 | 8265 |
| 39 | 0 |
| 40 | 1918 |
| 41 | 0 |
| 42 | 8415 |
| 43 | -10230 |
| 44 | -7140 |
| 45 | -9362 |