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 | 1 |
| 2 | 4 |
| 3 | 6 |
| 4 | 30 |
| 5 | 34 |
| 6 | 94 |
| 7 | 216 |
| 8 | 1120 |
| 9 | 1438 |
| 10 | 3370 |
| 11 | 5062 |
| 12 | 6714 |
| 13 | 30666 |
| 14 | 36966 |
| 15 | 169240 |