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 | -2 |
| 2 | 1 |
| 3 | -29 |
| 4 | 7 |
| 5 | 1 |
| 6 | 268 |
| 7 | -74 |
| 8 | -8 |
| 9 | 1 |
| 10 | 4885 |
| 11 | -1262 |
| 12 | -170 |
| 13 | 13 |
| 14 | 1 |
| 15 | -82838 |
| 16 | 21823 |
| 17 | 2800 |
| 18 | -257 |
| 19 | -14 |
| 20 | 1 |
| 21 | -2097065 |
| 22 | 548161 |
| 23 | 72055 |
| 24 | -6197 |
| 25 | -419 |
| 26 | 19 |
| 27 | 1 |
| 28 | 51727192 |
| 29 | -13551428 |
| 30 | -1770128 |
| 31 | 155398 |
| 32 | 9976 |
| 33 | -548 |
| 34 | -20 |
| 35 | 1 |
| 36 | 1696812649 |
| 37 | -444145484 |
| 38 | -58168484 |
| 39 | 5067886 |
| 40 | 333166 |
| 41 | -17180 |
| 42 | -776 |
| 43 | 25 |
| 44 | 1 |