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 | 7 |
| 2 | 71 |
| 3 | 719 |
| 4 | 7193 |
| 5 | 71933 |
| 6 | 719333 |
| 7 | 7193357 |
| 8 | 71933597 |
| 9 | 719335993 |
| 10 | 7193359933 |
| 11 | 71933599363 |
| 12 | 719335993631 |
| 13 | 7193359936331 |
| 14 | 71933599363319 |
| 15 | 719335993633291 |
| 16 | 7193359936332919 |
| 17 | 71933599363329217 |
| 18 | 719335993633292261 |