Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 12 |
4 | 72 |
5 | 240 |
6 | 2520 |
7 | 10080 |
8 | 127680 |
9 | 816480 |
10 | 11037600 |
11 | 79833600 |
12 | 1514177280 |
13 | 12454041600 |
14 | 261655954560 |
15 | 2699348652000 |
16 | 62869385779200 |
17 | 711374856192000 |
18 | 19407798693803520 |
19 | 243290200817664000 |
20 | 7300765959334848000 |
21 | 102980278869910041600 |
[1,1,4,12,72,240,2520,10080,127680,816480, 11037600,79833600,1514177280,12454041600, 261655954560,2699348652000,62869385779200, 711374856192000,19407798693803520, 243290200817664000,7300765959334848000, 102980278869910041600] |