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 | 5 |
| 2 | 6 |
| 3 | -1 |
| 4 | -10 |
| 5 | -5 |
| 6 | 18 |
| 7 | 31 |
| 8 | -2 |
| 9 | -61 |
| 10 | -54 |
| 11 | 71 |
| 12 | 182 |
| 13 | 43 |
| 14 | -318 |
| 15 | -401 |
| 16 | 238 |
| 17 | 1043 |
| 18 | 570 |
| 19 | -1513 |
| 20 | -2650 |
| 21 | 379 |
| 22 | 5682 |
| 23 | 4927 |
| 24 | -6434 |
| 25 | -16285 |
| 26 | -3414 |
| 27 | 29159 |
| 28 | 35990 |
| 29 | -22325 |
| 30 | -94302 |
| 31 | -49649 |
| 32 | 138958 |
| 33 | 238259 |
| 34 | -39654 |
| 35 | -516169 |
| 36 | -436858 |
| 37 | 595483 |
| 38 | 1469202 |
| 39 | 278239 |
| 40 | -2660162 |
| 41 | -3216637 |
| 42 | 2103690 |
| 43 | 8536967 |