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 | 16 |
| 2 | 512 |
| 3 | 13616 |
| 4 | 368144 |
| 5 | 9989376 |
| 6 | 270990144 |
| 7 | 7350348800 |
| 8 | 199375282176 |
| 9 | 5407964088576 |
| 10 | 146688598302720 |
| 11 | 3978862338503680 |
| 12 | 107924853732951040 |
| 13 | 2927413180587028480 |
| 14 | 79404767608300756992 |
| 15 | 2153818654894959054848 |