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) |
|---|---|
| 1 | 0 |
| 2 | 11 |
| 3 | 13 |
| 4 | 101 |
| 5 | 107 |
| 6 | 177 |
| 7 | 357 |
| 8 | 1001 |
| 9 | 1011 |
| 10 | 10759 |
| 11 | 11487 |
| 12 | 42189 |
| 13 | 113183 |
| 14 | 344253 |
| 15 | 1851759 |
| 16 | 4787769 |
| 17 | 15848679 |
| 18 | 139367847 |
| 19 | 240889077 |
| 20 | 1167555543 |
| 21 | 111738007953 |