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 | 17 |
| 3 | 19 |
| 4 | 705 |
| 5 | 1061 |
| 6 | 1395 |
| 7 | 2631 |
| 8 | 3837 |
| 9 | 5749 |
| 10 | 11753 |
| 11 | 13537 |
| 12 | 125877 |
| 13 | 269479 |