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 | 67 |
| 3 | 607 |
| 4 | 677 |
| 5 | 787 |
| 6 | 877 |
| 7 | 887 |
| 8 | 6007 |
| 9 | 6067 |
| 10 | 6607 |
| 11 | 7607 |
| 12 | 7687 |
| 13 | 7867 |
| 14 | 7877 |
| 15 | 8087 |
| 16 | 8677 |
| 17 | 8707 |
| 18 | 8807 |
| 19 | 8867 |
| 20 | 8887 |
| 21 | 60077 |
| 22 | 60607 |
| 23 | 60887 |
| 24 | 66067 |
| 25 | 66877 |
| 26 | 67607 |
| 27 | 67777 |
| 28 | 67807 |
| 29 | 67867 |
| 30 | 68087 |
| 31 | 68687 |
| 32 | 68767 |
| 33 | 68777 |
| 34 | 70067 |
| 35 | 70607 |
| 36 | 70667 |
| 37 | 70687 |
| 38 | 70867 |
| 39 | 70877 |
| 40 | 76607 |
| 41 | 76667 |
| 42 | 76777 |