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 | 1 |
| 3 | 1 |
| 4 | -3 |
| 5 | 1 |
| 6 | 1 |
| 7 | 17 |
| 8 | 17 |
| 9 | 1 |
| 10 | 1 |
| 11 | -239 |
| 12 | -219 |
| 13 | -239 |
| 14 | 1 |
| 15 | 1 |
| 16 | 7169 |
| 17 | 6933 |
| 18 | 6933 |
| 19 | 7169 |
| 20 | 1 |
| 21 | 1 |
| 22 | -444479 |
| 23 | -437307 |
| 24 | -437563 |
| 25 | -437307 |
| 26 | -444479 |
| 27 | 1 |
| 28 | 1 |
| 29 | 56004353 |
| 30 | 55559877 |
| 31 | 55567029 |
| 32 | 55567029 |
| 33 | 55559877 |
| 34 | 56004353 |
| 35 | 1 |
| 36 | 1 |
| 37 | -14225105663 |
| 38 | -14169101307 |
| 39 | -14169545803 |
| 40 | -14169538395 |
| 41 | -14169545803 |
| 42 | -14169101307 |
| 43 | -14225105663 |
| 44 | 1 |