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 | 3 |
| 2 | 12 |
| 3 | 48 |
| 4 | 96 |
| 5 | 384 |
| 6 | 6144 |
| 7 | 393216 |
| 8 | 805306368 |
| 9 | 103079215104 |
| 10 | 549755813888 |
| 11 | 110680464442257309696 |
| 12 | 1176956575385002643219210516851437453019191645837006471168 |