Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 2 |
4 | 24 |
5 | 240 |
6 | 2440 |
7 | 26880 |
8 | 329280 |
9 | 4518080 |
10 | 69148800 |
11 | 1168675200 |
12 | 21564188800 |
13 | 430048819200 |
14 | 9195964377600 |
15 | 209593877292800 |
16 | 5068718054400000 |
17 | 129599032442880000 |
18 | 3492894468128665600 |
19 | 98968805893769011200 |
20 | 2940975338620999680000 |
21 | 91452266705317726208000 |
22 | 2969664371124258103296000 |
[1,0,0,2,24,240,2440,26880,329280,4518080, 69148800,1168675200,21564188800,430048819200, 9195964377600,209593877292800,5068718054400000, 129599032442880000,3492894468128665600, 98968805893769011200,2940975338620999680000, 91452266705317726208000,2969664371124258103296000] |