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 | 6 |
| 2 | 48 |
| 3 | 132 |
| 4 | 872 |
| 5 | 3496 |
| 6 | 24888 |
| 7 | 144624 |
| 8 | 1019568 |
| 9 | 6717892 |
| 10 | 47046932 |
| 11 | 329430764 |
| 12 | 2322991876 |
| 13 | 16258944216 |
| 14 | 113059436760 |
| 15 | 777944537312 |