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 | 1 |
3 | 1 |
4 | 491400 |
5 | 3546112878000 |
6 | 143424700959632400 |
7 | 10691567972893973348743970911396896000 |
8 | 210948344078434820704169472200928966427054605885088717074131707385374604732966434908020301638860800000 |