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 | 2 |
3 | 10 |
4 | 60 |
5 | 404 |
6 | 2912 |
7 | 21984 |
8 | 171600 |
9 | 1373680 |
10 | 11215776 |
11 | 93039648 |
12 | 781936896 |
13 | 6643741440 |
14 | 56973685760 |
15 | 492482782208 |
16 | 4286561051904 |
17 | 37536888622848 |
18 | 330471001126400 |
19 | 2923338431270400 |
20 | 25970490200202240 |
21 | 231607762146309120 |
22 | 2072719382680535040 |