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 | 2 |
| 2 | 10 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | -26 |
| 7 | 77 |
| 8 | -11 |
| 9 | 6 |
| 10 | 10 |
| 11 | -22 |
| 12 | 391 |
| 13 | 6450 |
| 14 | -65 |
| 15 | -2109 |
| 16 | -3329130 |
| 17 | -464 |
| 18 | -1190 |
| 19 | 595 |
| 20 | 14 |
| 21 | -174 |
| 22 | 15 |
| 23 | 128050 |
| 24 | 10 |
| 25 | -40 |
| 26 | -68 |
| 27 | -7458 |
| 28 | -34644001047040 |
| 29 | -33 |
| 30 | -20 |
| 31 | 22 |
| 32 | -58656 |
| 33 | -99 |
| 34 | 475 |
| 35 | -78 |
| 36 | -138 |
| 37 | -336 |
| 38 | 35226 |
| 39 | -725 |
| 40 | -144690 |
| 41 | -1799160 |