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) |
|---|---|
| 2 | 1 |
| 3 | -2 |
| 4 | 1 |
| 5 | 1 |
| 6 | -18 |
| 7 | -4 |
| 8 | 1 |
| 9 | 1 |
| 10 | -70 |
| 11 | 1 |
| 12 | -882 |
| 13 | -32 |
| 14 | 1 |
| 15 | 1 |
| 16 | -182 |
| 17 | 1 |
| 18 | -29718 |
| 19 | 1 |
| 20 | 1 |
| 21 | -1068 |
| 22 | 1 |
| 23 | 1 |
| 24 | -500 |
| 25 | -5604 |
| 26 | -4030 |
| 27 | 1 |
| 28 | 1 |
| 29 | -8890182 |
| 30 | -776 |
| 31 | 1 |
| 32 | 1 |
| 33 | -1744 |
| 34 | 1 |
| 35 | -113582 |
| 36 | 1 |
| 37 | -4832118 |
| 38 | 1 |
| 39 | 1 |
| 40 | -1118 |
| 41 | 1 |
| 42 | -1111225770 |
| 43 | 1 |
| 44 | -1764132 |
| 45 | -11018 |
| 46 | 1 |
| 47 | 1 |
| 48 | 1 |
| 49 | 1 |
| 50 | -20000849130 |
| 51 | -23156 |
| 52 | 1 |