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 | 373 |
| 1 | 3797 |
| 2 | 37337 |
| 3 | 73373 |
| 4 | 373379 |
| 5 | 831373 |
| 6 | 3733797 |
| 7 | 3733739 |
| 8 | 8313733 |
| 9 | 9973331 |
| 10 | 37337397 |
| 11 | 82337397 |
| 12 | 99733313 |
| 13 | 99733317 |
| 14 | 99793373 |
| 15 | 733133733 |
| 16 | 831373379 |
| 17 | 997333137 |
| 18 | 997337397 |
| 19 | 997933739 |
| 20 | 7331337337 |
| 21 | 8313733797 |
| 22 | 9733733797 |
| 23 | 9973331373 |
| 24 | 9979337397 |
| 25 | 9982337397 |