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A024687 as a simple table

n a(n)
1 1
2 0
3 0
4 1
5 3
6 4
7 6
8 0
9 0
10 1
11 3
12 4
13 6
14 8
15 9
16 11
17 12
18 14
19 16
20 1
21 3
22 4
23 6
24 8
25 9
26 11
27 12
28 14
29 16
30 17
31 19
32 21
33 22
34 24
35 26
36 30
37 33
38 36
39 40
40 9
41 11
42 12
43 14
44 16
45 17
46 19
47 21
48 22
49 24
50 25
51 27
52 29
53 30
54 32
55 33
56 36
57 40
58 42
59 46
60 50
61 52
62 56
63 58
64 62
65 66
66 68
67 72
68 76
69 78
70 24
71 25
72 27
73 29
74 30
75 32
76 33
77 35
78 37
79 38
80 40 

[1,0,0,1,3,4,6,0,0,1,3,4,6,8,9,11,12,14,16,1,3,4,
 6,8,9,11,12,14,16,17,19,21,22,24,26,30,33,36,40,9,
 11,12,14,16,17,19,21,22,24,25,27,29,30,32,33,36,
 40,42,46,50,52,56,58,62,66,68,72,76,78,24,25,27,
 29,30,32,33,35,37,38,40]

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Last modified April 23 12:59 EDT 2024. Contains 371913 sequences. (Running on oeis4.)