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 | 521 |
| 2 | 569 |
| 3 | 601 |
| 4 | 641 |
| 5 | 809 |
| 6 | 881 |
| 7 | 1049 |
| 8 | 1249 |
| 9 | 1361 |
| 10 | 1481 |
| 11 | 1609 |
| 12 | 1889 |
| 13 | 2081 |
| 14 | 2089 |
| 15 | 2129 |
| 16 | 2161 |
| 17 | 2441 |
| 18 | 2521 |
| 19 | 2609 |
| 20 | 2729 |
| 21 | 3041 |
| 22 | 3121 |
| 23 | 3169 |
| 24 | 3329 |
| 25 | 3449 |
| 26 | 3761 |
| 27 | 3769 |
| 28 | 3929 |
| 29 | 4001 |
| 30 | 4241 |
| 31 | 4289 |
| 32 | 4481 |
| 33 | 4729 |
| 34 | 4801 |
| 35 | 4889 |
| 36 | 4969 |
| 37 | 5009 |
| 38 | 5209 |
| 39 | 5281 |
| 40 | 5521 |
| 41 | 5641 |