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 | 3 |
| 2 | 5 |
| 3 | 149 |
| 4 | 179 |
| 5 | 239 |
| 6 | 269 |
| 7 | 419 |
| 8 | 569 |
| 9 | 1289 |
| 10 | 1319 |
| 11 | 2309 |
| 12 | 2549 |
| 13 | 2729 |
| 14 | 3359 |
| 15 | 3389 |
| 16 | 4259 |
| 17 | 4649 |
| 18 | 5849 |
| 19 | 5879 |
| 20 | 6359 |
| 21 | 6779 |
| 22 | 8999 |
| 23 | 9239 |
| 24 | 9629 |
| 25 | 10529 |
| 26 | 10889 |
| 27 | 11969 |
| 28 | 13679 |
| 29 | 13829 |
| 30 | 14009 |
| 31 | 14549 |
| 32 | 16229 |
| 33 | 16649 |
| 34 | 18059 |
| 35 | 18119 |
| 36 | 18539 |
| 37 | 19139 |
| 38 | 19379 |
| 39 | 21599 |
| 40 | 21839 |