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 | 729 |
| 2 | 29791 |
| 3 | 970299 |
| 4 | 994011992 |
| 5 | 997002999 |
| 6 | 499999005953 |
| 7 | 999700029999 |
| 8 | 999940001199992 |
| 9 | 999970000299999 |
| 10 | 991023990975990999 |
| 11 | 999997000002999999 |
| 12 | 299243659909999996099 |
| 13 | 999999700000029999999 |
| 14 | 929999949497863992829999 |
| 15 | 999100239990997599909999 |