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 | -1 |
| 3 | 1 |
| 4 | 7 |
| 5 | -8 |
| 6 | 1 |
| 7 | -235 |
| 8 | 273 |
| 9 | -39 |
| 10 | 1 |
| 11 | 35353 |
| 12 | -41116 |
| 13 | 5928 |
| 14 | -166 |
| 15 | 1 |
| 16 | -22683409 |
| 17 | 26382125 |
| 18 | -3804940 |
| 19 | 106900 |
| 20 | -677 |
| 21 | 1 |
| 22 | 60147266239 |
| 23 | -69954818244 |
| 24 | 10089231945 |
| 25 | -283474190 |
| 26 | 1796973 |
| 27 | -2724 |
| 28 | 1 |
| 29 | -648088191536203 |
| 30 | 753764796604717 |
| 31 | -108711714513099 |
| 32 | 3054442698125 |
| 33 | -19362601277 |
| 34 | 29358651 |
| 35 | -10915 |
| 36 | 1 |