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 | 45 |
| 1 | 3 |
| 2 | 3 |
| 3 | 5 |
| 4 | 5 |
| 5 | 67 |
| 6 | 3 |
| 7 | 3 |
| 8 | 3 |
| 9 | 3 |
| 10 | 7 |
| 11 | 17 |
| 12 | 37 |
| 13 | 53 |
| 14 | 239 |
| 15 | 727 |
| 16 | 3 |
| 17 | 41 |
| 18 | 1949 |
| 19 | 3411949 |