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A086261
as a simple table
n
a(n)
1
1
2
2
3
0
4
16
5
0
6
0
7
0
8
30720
9
0
10
0
11
0
12
1486356480
13
0
[1,2,0,16,0,0,0,30720,0,0,0,1486356480,0]