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 | 5 |
| 3 | 7 |
| 4 | 227 |
| 5 | 257 |
| 6 | 277 |
| 7 | 557 |
| 8 | 577 |
| 9 | 727 |
| 10 | 757 |
| 11 | 2027 |
| 12 | 2207 |
| 13 | 2557 |
| 14 | 2707 |
| 15 | 2777 |
| 16 | 5077 |
| 17 | 5227 |
| 18 | 5507 |
| 19 | 5527 |
| 20 | 5557 |
| 21 | 7027 |
| 22 | 7057 |
| 23 | 7207 |
| 24 | 7507 |
| 25 | 7577 |
| 26 | 7727 |
| 27 | 7757 |
| 28 | 20507 |
| 29 | 20707 |
| 30 | 22027 |
| 31 | 22277 |
| 32 | 22727 |
| 33 | 22777 |
| 34 | 25057 |
| 35 | 25577 |
| 36 | 27077 |
| 37 | 27277 |
| 38 | 27527 |
| 39 | 50077 |
| 40 | 50207 |
| 41 | 50227 |
| 42 | 50527 |
| 43 | 50707 |
| 44 | 50777 |