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A086227 as a simple table

n a(n)
2 -1
3 2
4 -2
5 2
6 -4
7 4
8 -4
9 6
10 -4
11 6
12 -8
13 6
14 -8
15 8
16 -8
17 8
18 -12
19 10
20 -8
21 16
22 -12
23 12
24 -16
25 10
26 -12
27 18
28 -16
29 14
30 -16
31 16
32 -16
33 24
34 -16
35 16
36 -24
37 18
38 -20
39 24
40 -16
41 20
42 -32
43 22
44 -24
45 24
46 -24
47 24
48 -32
49 28
50 -20
51 32
52 -24
53 26
54 -36
55 24
56 -32
57 40
58 -28
59 30
60 -32
61 30
62 -32
63 48
64 -32
65 24
66 -48
67 34
68 -32
69 48
70 -32
71 36
72 -48
73 36
74 -36
75 40
76 -40
77 48
78 -48

[-1,2,-2,2,-4,4,-4,6,-4,6,-8,6,-8,8,-8,8,-12,10,
 -8,16,-12,12,-16,10,-12,18,-16,14,-16,16,-16,24,
 -16,16,-24,18,-20,24,-16,20,-32,22,-24,24,-24,24,
 -32,28,-20,32,-24,26,-36,24,-32,40,-28,30,-32,30,
 -32,48,-32,24,-48,34,-32,48,-32,36,-48,36,-36,40,
 -40,48,-48]

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Last modified May 26 09:52 EDT 2019. Contains 323579 sequences. (Running on oeis4.)