Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 8 |
3 | 50 |
4 | 288 |
5 | 1604 |
6 | 8800 |
7 | 47944 |
8 | 260352 |
9 | 1411600 |
10 | 7647872 |
11 | 41420576 |
12 | 224294400 |
13 | 1214467136 |
14 | 6575615488 |
15 | 35602384000 |
16 | 192760455168 |
17 | 1043650265344 |
18 | 5650555750400 |
19 | 30593342288384 |
20 | 165638957801472 |
21 | 896804870374400 |
[0,1,8,50,288,1604,8800,47944,260352,1411600, 7647872,41420576,224294400,1214467136,6575615488, 35602384000,192760455168,1043650265344, 5650555750400,30593342288384,165638957801472, 896804870374400] |