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 | 63 |
| 2 | 7623 |
| 3 | 776223 |
| 4 | 77762223 |
| 5 | 7777622223 |
| 6 | 777776222223 |
| 7 | 77777762222223 |
| 8 | 7777777622222223 |
| 9 | 777777776222222223 |
| 10 | 77777777762222222223 |
| 11 | 7777777777622222222223 |
| 12 | 777777777776222222222223 |
| 13 | 77777777777762222222222223 |
| 14 | 7777777777777622222222222223 |
| 15 | 777777777777776222222222222223 |