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 | 3 |
| 2 | 9 |
| 3 | 19 |
| 4 | 23 |
| 5 | 27 |
| 6 | 37 |
| 7 | 39 |
| 8 | 107 |
| 9 | 1007 |
| 10 | 1041 |
| 11 | 1047 |
| 12 | 1051 |
| 13 | 1073 |
| 14 | 10000011 |
| 15 | 10000047 |
| 16 | 10000109 |
| 17 | 1000000000000017 |
| 18 | 1000000000000053 |
| 19 | 1000000000000071 |
| 20 | 1000000000000291 |
| 21 | 1000000000000449 |
| 22 | 10000000000000000000000000000113 |
| 23 | 10000000000000000000000000000193 |
| 24 | 10000000000000000000000000000249 |