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A047947 formatted as a simple table:

n a(n)
0 2
1 4
2 2
3 4
4 4
5 4
6 6
7 4
8 2
9 4
10 6
11 6
12 2
13 6
14 4
15 6
16 4
17 6
18 4
19 4
20 6
21 4
22 6
23 10
24 4
25 6
26 6
27 4
28 6
29 4
30 6
31 6
32 4
33 2
34 4
35 6
36 8
37 6
38 4
39 2
40 8
41 4
42 10
43 2
44 4
45 10
46 10
47 4
48 6
49 6
50 2
51 10
52 6
53 2
54 6
55 4
56 6
57 12
58 4
59 6
60 10
61 4
62 6
63 6
64 6
65 8
66 6
67 10
68 4
69 8
70 6
71 6
72 2
73 6
74 12
75 10
76 2
77 4
78 6
79 6
80 8
81 4
82 2
83 10
84 8
85 6
86 6
87 4
88 8
89 10
90 2
91 6
92 4
93 2 

[2,4,2,4,4,4,6,4,2,4,6,6,2,6,4,6,4,6,4,4,6,4,6,10,
 4,6,6,4,6,4,6,6,4,2,4,6,8,6,4,2,8,4,10,2,4,10,10,
 4,6,6,2,10,6,2,6,4,6,12,4,6,10,4,6,6,6,8,6,10,4,8,
 6,6,2,6,12,10,2,4,6,6,8,4,2,10,8,6,6,4,8,10,2,6,4,
 2]

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

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