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 | 0 |
| 2 | 0 |
| 3 | -88 |
| 4 | -330 |
| 5 | 0 |
| 6 | 0 |
| 7 | -4224 |
| 8 | -7524 |
| 9 | 0 |
| 10 | 0 |
| 11 | -30600 |
| 12 | -46552 |
| 13 | 0 |
| 14 | 0 |
| 15 | -130944 |
| 16 | -169290 |
| 17 | 0 |
| 18 | 0 |
| 19 | -355080 |
| 20 | -464904 |
| 21 | 0 |
| 22 | 0 |
| 23 | -899712 |
| 24 | -1052040 |
| 25 | 0 |
| 26 | 0 |
| 27 | -1732192 |
| 28 | -2099328 |
| 29 | 0 |
| 30 | 0 |
| 31 | -3421440 |
| 32 | -3859812 |
| 33 | 0 |
| 34 | 0 |
| 35 | -5593104 |