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 | 7 |
| 4 | 37 |
| 5 | 53 |
| 6 | 73 |
| 7 | 337 |
| 8 | 353 |
| 9 | 373 |
| 10 | 557 |
| 11 | 577 |
| 12 | 733 |
| 13 | 757 |
| 14 | 773 |
| 15 | 3373 |
| 16 | 3533 |
| 17 | 3557 |
| 18 | 3733 |
| 19 | 5333 |
| 20 | 5557 |
| 21 | 5573 |
| 22 | 5737 |
| 23 | 7333 |
| 24 | 7537 |
| 25 | 7573 |
| 26 | 7577 |
| 27 | 7753 |
| 28 | 7757 |
| 29 | 33353 |
| 30 | 33377 |
| 31 | 33533 |
| 32 | 33577 |
| 33 | 33757 |
| 34 | 33773 |
| 35 | 35353 |
| 36 | 35533 |
| 37 | 35537 |
| 38 | 35573 |
| 39 | 35753 |
| 40 | 37337 |
| 41 | 37357 |
| 42 | 37537 |