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 | 7 |
| 2 | 11 |
| 3 | 17 |
| 4 | 41 |
| 5 | 47 |
| 6 | 71 |
| 7 | 1117 |
| 8 | 1171 |
| 9 | 1447 |
| 10 | 1471 |
| 11 | 1741 |
| 12 | 1747 |
| 13 | 1777 |
| 14 | 4111 |
| 15 | 4177 |
| 16 | 4441 |
| 17 | 4447 |
| 18 | 7177 |
| 19 | 7411 |
| 20 | 7417 |
| 21 | 7477 |
| 22 | 7717 |
| 23 | 7741 |
| 24 | 11117 |
| 25 | 11171 |
| 26 | 11177 |
| 27 | 11411 |
| 28 | 11447 |
| 29 | 11471 |
| 30 | 11717 |
| 31 | 11777 |
| 32 | 14177 |
| 33 | 14411 |
| 34 | 14447 |
| 35 | 14717 |
| 36 | 14741 |
| 37 | 14747 |
| 38 | 14771 |
| 39 | 17117 |
| 40 | 17417 |