n | a(n) |
---|---|
1 | 3 |
2 | 3 |
3 | 78 |
4 | 186 |
5 | 4008 |
6 | 15912 |
7 | 340560 |
8 | 1931760 |
9 | 43139520 |
10 | 321312960 |
11 | 7611891840 |
12 | 70589232000 |
13 | 1783264896000 |
14 | 19854108288000 |
15 | 535217663232000 |
16 | 6967948748544000 |
17 | 200181525175296000 |
18 | 2987361024592896000 |
19 | 91267413626898432000 |
20 | 1537150149529860096000 |
21 | 49817611958159130624000 |
[3,3,78,186,4008,15912,340560,1931760,43139520, 321312960,7611891840,70589232000,1783264896000, 19854108288000,535217663232000,6967948748544000, 200181525175296000,2987361024592896000, 91267413626898432000,1537150149529860096000, 49817611958159130624000] |