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 | 29929 |
| 3 | 69696 |
| 4 | 929296 |
| 5 | 9696996 |
| 6 | 996222969 |
| 7 | 26629996969 |
| 8 | 69926926969 |
| 9 | 269996262622969 |
| 10 | 9222222699262629962929 |
| 11 | 9929662926692269969296 |
| 12 | 96296299962926222299669929 |
| 13 | 2669292996662992629666262969 |
| 14 | 2699929699222292222296696996 |
| 15 | 62969966996922666266229669292996 |