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 | 72 |
| 2 | 11772 |
| 3 | 771762 |
| 4 | 757770 |
| 5 | 77677782 |
| 6 | 779777700 |
| 7 | 7077772770 |
| 8 | 778777127772 |
| 9 | 7777770777090 |
| 10 | 57777777767730 |
| 11 | 7777577077877756 |
| 12 | 177677777977777980 |
| 13 | 17673737777477771772 |
| 14 | 677777977779775677756 |
| 15 | 1789771777777771777710 |
| 16 | 7747977777770507777772 |
| 17 | 298777877777767737777770 |