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 | 109 |
| 2 | 151 |
| 3 | 191 |
| 4 | 229 |
| 5 | 233 |
| 6 | 283 |
| 7 | 311 |
| 8 | 571 |
| 9 | 643 |
| 10 | 683 |
| 11 | 727 |
| 12 | 941 |
| 13 | 991 |
| 14 | 1033 |
| 15 | 1051 |
| 16 | 1373 |
| 17 | 1493 |
| 18 | 1667 |
| 19 | 1697 |
| 20 | 1741 |
| 21 | 1747 |
| 22 | 1783 |
| 23 | 1787 |
| 24 | 1801 |
| 25 | 1931 |