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A020891 as a simple table

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

[4,6,8,10,10,12,14,14,16,18,18,20,22,22,24,26,26,
 28,28,30,30,32,34,34,36,36,38,38,40,42,42,42,44,
 44,46,46,48,48,50,50,52,52,54,54,56,58,58,60,60,
 60,62,62,64,66,66,66,66,68,68,70,70,72,74,74,76,
 76,78,78,78,78,80,82,82]

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Last modified May 13 15:38 EDT 2021. Contains 343860 sequences. (Running on oeis4.)