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A296818
as a simple table
n
a(n)
1
-15
2
-11
3
-7
4
-5
5
-3
6
-2
7
-1
8
2
9
3
10
5
11
6
12
7
13
10
14
11
15
13
16
15
17
17
18
19
19
21
20
29
21
33
22
37
23
41
24
57
25
73
26
85
[-15,-11,-7,-5,-3,-2,-1,2,3,5,6,7,10,11,13,15,17, 19,21,29,33,37,41,57,73,85]