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 | 2 |
| 2 | -2 |
| 3 | -10 |
| 4 | -2 |
| 5 | 38 |
| 6 | 46 |
| 7 | -106 |
| 8 | -290 |
| 9 | 134 |
| 10 | 1294 |
| 11 | 758 |
| 12 | -4418 |
| 13 | -7450 |
| 14 | 10222 |
| 15 | 40022 |
| 16 | -866 |
| 17 | -160954 |
| 18 | -157490 |
| 19 | 486326 |
| 20 | 1116286 |
| 21 | -829018 |
| 22 | -5294162 |
| 23 | -1978090 |
| 24 | 19198558 |
| 25 | 27110918 |
| 26 | -49683314 |
| 27 | -158126986 |
| 28 | 40606270 |
| 29 | 673114214 |
| 30 | 510689134 |
| 31 | -2181767722 |
| 32 | -4224524258 |