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) |
|---|---|
| 2 | 91 |
| 3 | 949 |
| 4 | 8911 |
| 5 | 97567 |
| 6 | 997633 |
| 7 | 9959413 |
| 8 | 99971821 |
| 9 | 999271891 |
| 10 | 9999326731 |
| 11 | 99997244929 |
| 12 | 999989423051 |
| 13 | 9999899578441 |
| 14 | 99999695823301 |
| 15 | 999999050050321 |
| 16 | 9999997295187859 |
| 17 | 99999997019370001 |