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 | 9 |
| 2 | 676 |
| 3 | 69696 |
| 4 | 97969 |
| 5 | 9696996 |
| 6 | 9697699776769 |
| 7 | 77797697969777769 |
| 8 | 776797677679677696 |
| 9 | 6776696769676669969 |
| 10 | 9767769967769766976 |
| 11 | 97667999767779769677969 |
| 12 | 7676999976999997667777796 |
| 13 | 69997676676669667699797969 |
| 14 | 67976976676979976697777676769 |
| 15 | 96667776776767999797799699976676 |