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A084520 as a simple table

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

[0,1,2,2,3,3,3,4,4,4,5,5,5,6,6,6,6,7,7,7,7,8,8,8,
 8,9,9,9,9,10,10,10,10,11,11,11,11,12,12,12,12,13,
 13,13,13,14,14,14,14,15,15,15,15,16,16,16,16,17,
 17,17,17,18,18,18,18,18,19,19,19,19,19,20,20,20,
 20,20,21,21,21]

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Last modified October 18 08:08 EDT 2019. Contains 328146 sequences. (Running on oeis4.)