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A121260 as a simple table

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

[0,0,1,1,2,2,3,3,5,5,7,7,8,8,10,10,11,11,12,12,13,
 13,14,14,16,16,17,17,18,18,19,19,20,20,21,21,22,
 22,23,23,24,24,26,26,27,27,28,28,29,29,30,30,31,
 31,32,32,33,33,34,34,36,36,37,37,38,38,39,39,40,
 40,41,41,42,42]

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Last modified April 5 19:42 EDT 2020. Contains 333257 sequences. (Running on oeis4.)