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A160762
as a simple table
n
a(n)
1
1
2
0
3
2
4
-2
5
2
6
2
7
2
8
-6
9
2
10
2
11
2
12
-2
13
6
14
6
15
-2
16
-14
17
2
18
2
19
2
20
-2
21
6
22
6
23
-2
24
-10
25
6
26
6
27
2
28
2
[1,0,2,-2,2,2,2,-6,2,2,2,-2,6,6,-2,-14,2,2,2,-2,6, 6,-2,-10,6,6,2,2]