n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 6 |
5 | 150 |
6 | 3240 |
7 | 71610 |
8 | 1692180 |
9 | 43296120 |
10 | 1202014800 |
11 | 36144686160 |
12 | 1173334341960 |
13 | 40964232699390 |
14 | 1532291272031520 |
15 | 61185138170697450 |
16 | 2599160146594218480 |
17 | 117091760635760465520 |
18 | 5577733223175044859840 |
19 | 280195572152151651031200 |
[0,0,0,0,6,150,3240,71610,1692180,43296120, 1202014800,36144686160,1173334341960, 40964232699390,1532291272031520,61185138170697450, 2599160146594218480,117091760635760465520, 5577733223175044859840,280195572152151651031200] |