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A307989 as a simple table

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

[0,0,1,2,3,4,4,6,6,6,7,8,9,11,11,11,12,14,14,16,
 16,16,17,18,19,20,20,21,22,23,23,25,26,26,27,27,
 27,29,30,30,31,32,33,35,35,36,37,39,39,40,40,40,
 41,42,42,43,43,44,45,47,48,50,51,51,52,52,53,55]

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Last modified April 27 21:03 EDT 2024. Contains 372020 sequences. (Running on oeis4.)