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 | 3 |
| 2 | 7 |
| 3 | 31 |
| 4 | 47 |
| 5 | 109 |
| 6 | 151 |
| 7 | 223 |
| 8 | 463 |
| 9 | 739 |
| 10 | 6427 |
| 11 | 17581 |
| 12 | 30517 |