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 | -16 |
| 2 | 112 |
| 3 | -448 |
| 4 | 1136 |
| 5 | -2016 |
| 6 | 3136 |
| 7 | -5504 |
| 8 | 9328 |
| 9 | -12112 |
| 10 | 14112 |
| 11 | -21312 |
| 12 | 31808 |
| 13 | -35168 |
| 14 | 38528 |
| 15 | -56448 |
| 16 | 74864 |
| 17 | -78624 |
| 18 | 84784 |
| 19 | -109760 |
| 20 | 143136 |
| 21 | -154112 |
| 22 | 149184 |
| 23 | -194688 |
| 24 | 261184 |
| 25 | -252016 |
| 26 | 246176 |
| 27 | -327040 |
| 28 | 390784 |
| 29 | -390240 |
| 30 | 395136 |
| 31 | -476672 |
| 32 | 599152 |
| 33 | -596736 |