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 | 5 |
| 2 | -7 |
| 3 | 3 |
| 4 | 15 |
| 5 | -32 |
| 6 | 9 |
| 7 | 58 |
| 8 | -96 |
| 9 | 22 |
| 10 | 149 |
| 11 | -253 |
| 12 | 68 |
| 13 | 372 |
| 14 | -599 |
| 15 | 140 |
| 16 | 826 |
| 17 | -1317 |
| 18 | 317 |
| 19 | 1768 |
| 20 | -2735 |
| 21 | 632 |
| 22 | 3526 |
| 23 | -5434 |
| 24 | 1259 |
| 25 | 6854 |
| 26 | -10364 |
| 27 | 2346 |
| 28 | 12765 |
| 29 | -19188 |
| 30 | 4345 |
| 31 | 23224 |
| 32 | -34524 |
| 33 | 7693 |
| 34 | 41049 |
| 35 | -60654 |
| 36 | 13487 |
| 37 | 71176 |
| 38 | -104303 |
| 39 | 22962 |
| 40 | 120718 |
| 41 | -176050 |
| 42 | 38622 |
| 43 | 201539 |