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 | 197 |
| 2 | 719 |
| 3 | 971 |
| 4 | 1193 |
| 5 | 1931 |
| 6 | 3119 |
| 7 | 3779 |
| 8 | 7793 |
| 9 | 7937 |
| 10 | 9311 |
| 11 | 9377 |
| 12 | 11939 |
| 13 | 19391 |
| 14 | 19937 |
| 15 | 37199 |
| 16 | 39119 |
| 17 | 71993 |
| 18 | 91193 |
| 19 | 93719 |
| 20 | 93911 |
| 21 | 99371 |
| 22 | 193939 |
| 23 | 199933 |
| 24 | 319993 |
| 25 | 331999 |
| 26 | 391939 |
| 27 | 393919 |
| 28 | 919393 |
| 29 | 933199 |
| 30 | 939193 |
| 31 | 939391 |
| 32 | 993319 |
| 33 | 999331 |