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 | -1 |
| 2 | -2 |
| 3 | -2 |
| 4 | 1 |
| 5 | 5 |
| 6 | 4 |
| 7 | 10 |
| 8 | 6 |
| 9 | -5 |
| 10 | -20 |
| 11 | -27 |
| 12 | -37 |
| 13 | -32 |
| 14 | -18 |
| 15 | 23 |
| 16 | 82 |
| 17 | 128 |
| 18 | 190 |
| 19 | 185 |
| 20 | 143 |
| 21 | 43 |
| 22 | -160 |
| 23 | -424 |
| 24 | -662 |
| 25 | -968 |
| 26 | -1058 |
| 27 | -971 |
| 28 | -571 |
| 29 | 238 |
| 30 | 1326 |
| 31 | 2748 |
| 32 | 4195 |
| 33 | 5301 |
| 34 | 5930 |
| 35 | 5473 |
| 36 | 3353 |
| 37 | 55 |
| 38 | -5346 |
| 39 | -12106 |
| 40 | -19421 |
| 41 | -26603 |
| 42 | -31950 |
| 43 | -33248 |
| 44 | -29344 |
| 45 | -17469 |
| 46 | 2343 |
| 47 | 30966 |