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A109728 as a simple table

n a(n)
0 1
1 2
2 2
3 3
4 3
5 4
6 4
7 5
8 5
9 6
10 6
11 7
12 7
13 8
14 8
15 9
16 9
17 10
18 10
19 12
20 12
21 14
22 14
23 16
24 16
25 18
26 18
27 20
28 21
29 21
30 23
31 23
32 25
33 25
34 27
35 27
36 29
37 29
38 31
39 32
40 32
41 34
42 34
43 36
44 36
45 38
46 38
47 40
48 41
49 41
50 43
51 43
52 45
53 45
54 47
55 47
56 49
57 49
58 51
59 52
60 52
61 54
62 54
63 56
64 56
65 58
66 58
67 60
68 61
69 61
70 63
71 63

[1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,12,12,14,
 14,16,16,18,18,20,21,21,23,23,25,25,27,27,29,29,
 31,32,32,34,34,36,36,38,38,40,41,41,43,43,45,45,
 47,47,49,49,51,52,52,54,54,56,56,58,58,60,61,61,
 63,63]

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Last modified November 18 10:08 EST 2019. Contains 329261 sequences. (Running on oeis4.)