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A111581 as a simple table

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

[1,1,2,2,3,3,4,5,6,7,8,8,9,9,10,10,11,12,12,14,14,
 15,16,16,17,17,18,19,19,21,20,21,22,22,24,24,25,
 26,27,29,29,31,32,32,34,34,35,36,37,38,39,40,41,
 42,44,44,45,46,47,48,49,49,50,50,51,51,52,53,53,
 55,55,56,57,57]

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Last modified April 24 05:33 EDT 2024. Contains 371918 sequences. (Running on oeis4.)