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 | 79 |
| 3 | 911 |
| 4 | 2729 |
| 5 | 3739 |
| 6 | 4547 |
| 7 | 4951 |
| 8 | 5153 |
| 9 | 5557 |
| 10 | 6163 |
| 11 | 6971 |
| 12 | 7577 |
| 13 | 105107 |
| 14 | 109111 |
| 15 | 115117 |
| 16 | 117119 |
| 17 | 121123 |
| 18 | 151153 |
| 19 | 159161 |
| 20 | 181183 |
| 21 | 187189 |
| 22 | 195197 |
| 23 | 201203 |
| 24 | 211213 |
| 25 | 217219 |
| 26 | 225227 |
| 27 | 247249 |
| 28 | 271273 |
| 29 | 277279 |
| 30 | 285287 |
| 31 | 289291 |