n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 120 |
6 | 720 |
7 | 4320 |
8 | 25920 |
9 | 155520 |
10 | 933120 |
11 | 5223720 |
12 | 28065624 |
13 | 148043310 |
14 | 779305142 |
15 | 4138663683 |
16 | 22326100565 |
17 | 121438789028 |
18 | 662769584476 |
19 | 3618469944096 |
20 | 19732129903872 |
21 | 107425688617728 |
22 | 584061299353728 |
[1,2,6,24,120,720,4320,25920,155520,933120, 5223720,28065624,148043310,779305142,4138663683, 22326100565,121438789028,662769584476, 3618469944096,19732129903872,107425688617728, 584061299353728] |