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 | 2 |
| 3 | 4 |
| 4 | 16 |
| 5 | 48 |
| 6 | 160 |
| 7 | 576 |
| 8 | 2560 |
| 9 | 12288 |
| 10 | 73728 |
| 11 | 327680 |
| 12 | 2097152 |
| 13 | 14929920 |
| 14 | 68853760 |
| 15 | 390905856 |
| 16 | 2363752448 |