n | a(n) |
---|---|
5 | 1 |
6 | 30 |
7 | 630 |
8 | 11760 |
9 | 211680 |
10 | 3810240 |
11 | 69854400 |
12 | 1317254400 |
13 | 25686460800 |
14 | 519437318400 |
15 | 10908183686400 |
16 | 237996734976000 |
17 | 5394592659456000 |
18 | 126980411830272000 |
19 | 3101950060425216000 |
20 | 78582734864105472000 |
21 | 2062796790182768640000 |
22 | 56059536297908183040000 |
[1,30,630,11760,211680,3810240,69854400, 1317254400,25686460800,519437318400, 10908183686400,237996734976000,5394592659456000, 126980411830272000,3101950060425216000, 78582734864105472000,2062796790182768640000, 56059536297908183040000] |