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 | 369040 |
| 5 | 9989376 |
| 6 | 270422672 |
| 7 | 7320574992 |
| 8 | 198174358400 |
| 9 | 5364752820144 |
| 10 | 145228540660944 |
| 11 | 3931463336250816 |
| 12 | 106428143490485072 |
| 13 | 2881102723859806480 |
| 14 | 77993965065966629248 |
| 15 | 2111364699472345059888 |