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 | -4 |
| 2 | -4 |
| 3 | -8 |
| 4 | -8 |
| 5 | -12 |
| 6 | 4 |
| 7 | 0 |
| 8 | 16 |
| 9 | 28 |
| 10 | 60 |
| 11 | 72 |
| 12 | 120 |
| 13 | 148 |
| 14 | 212 |
| 15 | 192 |
| 16 | 272 |
| 17 | 268 |
| 18 | 316 |
| 19 | 264 |
| 20 | 264 |
| 21 | 116 |
| 22 | 84 |
| 23 | -176 |
| 24 | -368 |
| 25 | -788 |
| 26 | -1140 |
| 27 | -1848 |
| 28 | -2168 |
| 29 | -3164 |
| 30 | -3884 |
| 31 | -5040 |
| 32 | -5920 |
| 33 | -7412 |
| 34 | -8308 |
| 35 | -9960 |
| 36 | -10872 |
| 37 | -12540 |
| 38 | -13276 |
| 39 | -14768 |
| 40 | -14752 |
| 41 | -15620 |
| 42 | -14644 |
| 43 | -14120 |
| 44 | -11304 |