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 | 13 |
| 2 | 19 |
| 3 | 23 |
| 4 | 31 |
| 5 | 47 |
| 6 | 127 |
| 7 | 223 |
| 8 | 281 |
| 9 | 2083 |
| 10 | 5281 |
| 11 | 7411 |
| 12 | 7433 |
| 13 | 19051 |
| 14 | 27239 |
| 15 | 35863 |
| 16 | 70327 |
| 17 | 128941 |
| 18 | 147571 |
| 19 | 182099 |
| 20 | 866029 |