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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 4 |
| 3 | 9 |
| 4 | 169 |
| 5 | 4489 |
| 6 | 69696 |
| 7 | 2778889 |
| 8 | 277788889 |
| 9 | 8998988769 |
| 10 | 2699997789889 |
| 11 | 898999897988929 |
| 12 | 498999778899898896 |
| 13 | 969988797999759789889 |
| 14 | 1679898987989978888999689 |