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 | 4 |
| 3 | 378 |
| 4 | 2798336 |
| 5 | 3973658465625 |
| 6 | 1842282678468471349824 |
| 7 | 433296503176904197061300041939288 |
| 8 | 74235003800935257803650942510752495927455127552 |