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 | 1 |
2 | 20 |
3 | 1680 |
4 | 369600 |
5 | 168168000 |
6 | 137225088000 |
7 | 182509367040000 |
8 | 369398958888960000 |
9 | 1080491954750208000000 |
10 | 4386797336285844480000000 |
11 | 23934366266775567482880000000 |
12 | 170891375144777551827763200000000 |
13 | 1561776277448122046153927884800000000 |