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A172992 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 1
6 1
7 2
8 2
9 3
10 5
11 6
12 7
13 9
14 10
15 12
16 14
17 15
18 17
19 20
20 23
21 24
22 26
23 28
24 30
25 32
26 34
27 36
28 39
29 41
30 44
31 46
32 48
33 50
34 52
35 54
36 57
37 59
38 62
39 64
40 67
41 69
42 72
43 75
44 78
45 80
46 83
47 86
48 89
49 91
50 94
51 97
52 100
53 103
54 106
55 109
56 112
57 116
58 120
59 123
60 126

[0,0,0,1,1,1,2,2,3,5,6,7,9,10,12,14,15,17,20,23,
 24,26,28,30,32,34,36,39,41,44,46,48,50,52,54,57,
 59,62,64,67,69,72,75,78,80,83,86,89,91,94,97,100,
 103,106,109,112,116,120,123,126]

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Last modified April 24 07:01 EDT 2024. Contains 371920 sequences. (Running on oeis4.)