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 | -14 |
| 5 | 1 |
| 6 | 1 |
| 7 | -125 |
| 8 | -125 |
| 9 | 1 |
| 10 | 1 |
| 11 | -764 |
| 12 | -1274 |
| 13 | -764 |
| 14 | 1 |
| 15 | 1 |
| 16 | -4091 |
| 17 | -9206 |
| 18 | -9206 |
| 19 | -4091 |
| 20 | 1 |
| 21 | 1 |
| 22 | -20474 |
| 23 | -57329 |
| 24 | -77804 |
| 25 | -57329 |
| 26 | -20474 |
| 27 | 1 |
| 28 | 1 |
| 29 | -98297 |
| 30 | -327659 |
| 31 | -557021 |
| 32 | -557021 |
| 33 | -327659 |
| 34 | -98297 |
| 35 | 1 |
| 36 | 1 |
| 37 | -458744 |
| 38 | -1769444 |
| 39 | -3604424 |
| 40 | -4521914 |
| 41 | -3604424 |
| 42 | -1769444 |
| 43 | -458744 |
| 44 | 1 |