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 | 3 |
| 1 | 1 |
| 2 | 23 |
| 3 | -19 |
| 4 | 75 |
| 5 | -63 |
| 6 | 119 |
| 7 | -115 |
| 8 | 235 |
| 9 | -223 |
| 10 | 343 |
| 11 | -331 |
| 12 | 483 |
| 13 | -447 |
| 14 | 535 |
| 15 | -531 |
| 16 | 779 |
| 17 | -767 |
| 18 | 1015 |
| 19 | -1003 |
| 20 | 1283 |
| 21 | -1247 |
| 22 | 1463 |
| 23 | -1451 |
| 24 | 1795 |
| 25 | -1759 |
| 26 | 2039 |
| 27 | -2003 |
| 28 | 2315 |
| 29 | -2207 |
| 30 | 2263 |
| 31 | -2259 |
| 32 | 2763 |
| 33 | -2751 |
| 34 | 3255 |
| 35 | -3243 |
| 36 | 3779 |
| 37 | -3743 |
| 38 | 4215 |
| 39 | -4203 |
| 40 | 4803 |
| 41 | -4767 |
| 42 | 5303 |
| 43 | -5267 |