n | a(n) |
---|---|
3 | 1 |
4 | 1 |
5 | 10 |
6 | 180 |
7 | 4620 |
8 | 152880 |
9 | 6168960 |
10 | 293025600 |
11 | 15990004800 |
12 | 984647664000 |
13 | 67493121696000 |
14 | 5094263446272000 |
15 | 419688934689024000 |
16 | 37465564582397952000 |
17 | 3601861863990534144000 |
18 | 370962724717928318976000 |
19 | 40744403224500159055872000 |
[1,1,10,180,4620,152880,6168960,293025600, 15990004800,984647664000,67493121696000, 5094263446272000,419688934689024000, 37465564582397952000,3601861863990534144000, 370962724717928318976000, 40744403224500159055872000] |