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 | 2 |
4 | 6 |
5 | 144 |
6 | 720 |
7 | 518400 |
8 | 54432000 |
9 | 121927680000 |
10 | 23044331520000 |
11 | 83623270219776000000 |
12 | 32194959034613760000000 |
13 | 15421436889514446422016000000000 |
14 | 297710839152076388177018880000000000 |
15 | 267015660792140704250415525396480000000000 |