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 | 7 |
| 3 | 47 |
| 4 | 227 |
| 5 | 277 |
| 6 | 487 |
| 7 | 727 |
| 8 | 787 |
| 9 | 827 |
| 10 | 877 |
| 11 | 887 |
| 12 | 2287 |
| 13 | 2447 |
| 14 | 2477 |
| 15 | 2777 |
| 16 | 2887 |
| 17 | 4447 |
| 18 | 4787 |
| 19 | 4877 |
| 20 | 7247 |
| 21 | 7477 |
| 22 | 7487 |
| 23 | 7727 |
| 24 | 7877 |
| 25 | 8287 |
| 26 | 8447 |
| 27 | 8747 |
| 28 | 8887 |
| 29 | 22247 |
| 30 | 22277 |
| 31 | 22447 |
| 32 | 22727 |
| 33 | 22777 |
| 34 | 22787 |
| 35 | 22877 |
| 36 | 24247 |
| 37 | 24847 |
| 38 | 24877 |
| 39 | 27277 |
| 40 | 27427 |
| 41 | 27487 |
| 42 | 27827 |
| 43 | 27847 |
| 44 | 28277 |