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 | 17 |
| 1 | 173 |
| 2 | 1733 |
| 3 | 17333 |
| 4 | 1733309 |
| 5 | 173330917 |
| 6 | 1733309173 |
| 7 | 17333091733 |
| 8 | 1733309173319 |
| 9 | 173330917331917 |
| 10 | 17333091733191701 |
| 11 | 1733309173319170103 |
| 12 | 173330917331917010357 |
| 13 | 17333091733191701035703 |