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 | 1 |
| 2 | -3 |
| 3 | 11 |
| 4 | -23 |
| 5 | 36 |
| 6 | -49 |
| 7 | 85 |
| 8 | -143 |
| 9 | 176 |
| 10 | -188 |
| 11 | 287 |
| 12 | -433 |
| 13 | 456 |
| 14 | -479 |
| 15 | 726 |
| 16 | -959 |
| 17 | 970 |
| 18 | -1024 |
| 19 | 1331 |
| 20 | -1748 |
| 21 | 1866 |
| 22 | -1741 |
| 23 | 2301 |
| 24 | -3153 |
| 25 | 2961 |
| 26 | -2824 |
| 27 | 3830 |
| 28 | -4559 |
| 29 | 4496 |
| 30 | -4514 |
| 31 | 5457 |
| 32 | -6943 |
| 33 | 6842 |
| 34 | -6174 |
| 35 | 7890 |
| 36 | -9844 |
| 37 | 9140 |
| 38 | -8553 |
| 39 | 11126 |
| 40 | -13348 |
| 41 | 12342 |
| 42 | -11998 |
| 43 | 14191 |
| 44 | -16941 |