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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 191 |
| 5 | 19391 |
| 6 | 38183 |
| 7 | 1508051 |
| 8 | 1609061 |
| 9 | 1628261 |
| 10 | 3717173 |
| 11 | 3916193 |
| 12 | 161535161 |
| 13 | 161838161 |
| 14 | 170646071 |
| 15 | 172747271 |
| 16 | 182949281 |
| 17 | 190909091 |
| 18 | 352909253 |
| 19 | 354848453 |
| 20 | 360818063 |
| 21 | 364636463 |
| 22 | 15052625051 |
| 23 | 15150805151 |
| 24 | 15253635251 |