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) |
---|---|
0 | 1 |
1 | 40320 |
2 | 20922789888000 |
3 | 620448401733239439360000 |
4 | 263130836933693530167218012160000000 |
5 | 815915283247897734345611269596115894272000000000 |
6 | 12413915592536072670862289047373375038521486354677760000000000 |
7 | 710998587804863451854045647463724949736497978881168458687447040000000000000 |