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A056863
as a simple table
n
a(n)
1
1
2
-1
3
1
4
-2
5
1
6
1
7
-3
8
4
9
2
10
1
11
-4
12
9
13
10
14
4
15
1
16
-5
17
16
18
28
19
24
20
8
21
1
22
-6
23
25
24
60
25
80
26
56
27
16
[1,-1,1,-2,1,1,-3,4,2,1,-4,9,10,4,1,-5,16,28,24,8, 1,-6,25,60,80,56,16]