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 | 3 |
| 2 | 1 |
| 3 | -9 |
| 4 | -3 |
| 5 | 1 |
| 6 | -97 |
| 7 | -39 |
| 8 | 7 |
| 9 | 1 |
| 10 | 815 |
| 11 | 313 |
| 12 | -65 |
| 13 | -7 |
| 14 | 1 |
| 15 | 12367 |
| 16 | 4873 |
| 17 | -945 |
| 18 | -127 |
| 19 | 11 |
| 20 | 1 |
| 21 | -164465 |
| 22 | -64439 |
| 23 | 12735 |
| 24 | 1633 |
| 25 | -169 |
| 26 | -11 |
| 27 | 1 |
| 28 | -3314673 |
| 29 | -1302263 |
| 30 | 255327 |
| 31 | 33553 |
| 32 | -3249 |
| 33 | -263 |
| 34 | 15 |
| 35 | 1 |
| 36 | 60873999 |
| 37 | 23899401 |
| 38 | -4695969 |
| 39 | -613359 |
| 40 | 60591 |
| 41 | 4665 |
| 42 | -321 |
| 43 | -15 |
| 44 | 1 |