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 | 17 |
| 2 | 1117 |
| 3 | 1319 |
| 4 | 1723 |
| 5 | 2531 |
| 6 | 3137 |
| 7 | 3541 |
| 8 | 4349 |
| 9 | 6571 |
| 10 | 7177 |
| 11 | 8389 |
| 12 | 95101 |
| 13 | 97103 |
| 14 | 101107 |
| 15 | 125131 |
| 16 | 127133 |
| 17 | 137143 |
| 18 | 151157 |
| 19 | 155161 |
| 20 | 157163 |
| 21 | 161167 |
| 22 | 163169 |
| 23 | 167173 |
| 24 | 187193 |
| 25 | 197203 |
| 26 | 203209 |
| 27 | 205211 |
| 28 | 211217 |
| 29 | 217223 |
| 30 | 221227 |
| 31 | 223229 |