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 | 0 |
| 1 | 0 |
| 2 | -4 |
| 3 | 0 |
| 4 | -47 |
| 5 | -46 |
| 6 | 0 |
| 7 | -6362 |
| 8 | -23 |
| 9 | -22 |
| 10 | 0 |
| 11 | -32 |
| 12 | -471 |
| 13 | -470 |
| 14 | -29 |
| 15 | 0 |
| 16 | -218 |
| 17 | -4843985 |
| 18 | -39 |
| 19 | -38 |
| 20 | -657367 |
| 21 | 0 |
| 22 | -101 |
| 23 | -57 |
| 24 | -56 |
| 25 | -7609937 |
| 26 | -45 |
| 27 | -44 |
| 28 | 0 |
| 29 | -736 |
| 30 | -56168428 |
| 31 | -3113136 |
| 32 | -3113135 |
| 33 | -3113134 |
| 34 | -3113133 |
| 35 | -51 |
| 36 | 0 |
| 37 | -190 |
| 38 | -1213998 |
| 39 | -1213997 |
| 40 | -495 |
| 41 | -62 |
| 42 | -61 |
| 43 | -60 |