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) |
|---|---|
| 1 | -4 |
| 2 | 2 |
| 3 | 4 |
| 4 | 2 |
| 5 | -4 |
| 6 | -14 |
| 7 | -28 |
| 8 | -46 |
| 9 | -68 |
| 10 | -94 |
| 11 | -124 |
| 12 | -158 |
| 13 | -196 |
| 14 | -238 |
| 15 | -284 |
| 16 | -334 |
| 17 | -388 |
| 18 | -446 |
| 19 | -508 |
| 20 | -574 |
| 21 | -644 |
| 22 | -718 |
| 23 | -796 |
| 24 | -878 |
| 25 | -964 |
| 26 | -1054 |
| 27 | -1148 |
| 28 | -1246 |
| 29 | -1348 |
| 30 | -1454 |
| 31 | -1564 |
| 32 | -1678 |
| 33 | -1796 |
| 34 | -1918 |
| 35 | -2044 |
| 36 | -2174 |
| 37 | -2308 |
| 38 | -2446 |
| 39 | -2588 |
| 40 | -2734 |
| 41 | -2884 |
| 42 | -3038 |
| 43 | -3196 |
| 44 | -3358 |