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 | 5 |
| 2 | 11 |
| 3 | 101 |
| 4 | 191 |
| 5 | 1871 |
| 6 | 2081 |
| 7 | 3251 |
| 8 | 3461 |
| 9 | 15641 |
| 10 | 15731 |
| 11 | 397541 |
| 12 | 397751 |
| 13 | 1006301 |
| 14 | 1006331 |
| 15 | 1022381 |
| 16 | 1022501 |
| 17 | 1117601 |
| 18 | 1117811 |
| 19 | 1246241 |
| 20 | 1246361 |
| 21 | 1954151 |
| 22 | 1954361 |
| 23 | 2594951 |
| 24 | 2594981 |
| 25 | 2731691 |
| 26 | 2731901 |
| 27 | 2927591 |
| 28 | 2927801 |
| 29 | 3512051 |
| 30 | 3512231 |