A036298 (n!)!, n>0 (note that A000197 is the correct version of this sequence, with a(0) = 1, not 0).
0, 1, 2, 720, 620448401733239439360000
Offset: 0
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.