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 | 31 |
| 2 | 77 |
| 3 | 231 |
| 4 | 354 |
| 5 | 523 |
| 6 | 535 |
| 7 | 631 |
| 8 | 819 |
| 9 | 827 |
| 10 | 830 |
| 11 | 991 |
| 12 | 1234 |