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A165974 as a simple table

n a(n)
1 0
2 0
3 1
4 0
5 0
6 1
7 3
8 0
9 0
10 1
11 2
12 3
13 5
14 0
15 0
16 0
17 1
18 2
19 3
20 4
21 5
22 7
23 9
24 0
25 0
26 0
27 1
28 1
29 2
30 3
31 4
32 6
33 7
34 9
35 11
36 0
37 0
38 0
39 0
40 1
41 2
42 2
43 3
44 4
45 5
46 7
47 8
48 9
49 11
50 13
51 15
52 0
53 0
54 0
55 0
56 1
57 1
58 2
59 3
60 4
61 5
62 6
63 7
64 8
65 10
66 11
67 13
68 15
69 17
70 0
71 0
72 0
73 0
74 1
75 1
76 2
77 2
78 3
79 4
80 5
81 6
82 7
83 8
84 9
85 11
86 12
87 14
88 15
89 17
90 19
91 21

[0,0,1,0,0,1,3,0,0,1,2,3,5,0,0,0,1,2,3,4,5,7,9,0,
 0,0,1,1,2,3,4,6,7,9,11,0,0,0,0,1,2,2,3,4,5,7,8,9,
 11,13,15,0,0,0,0,1,1,2,3,4,5,6,7,8,10,11,13,15,17,
 0,0,0,0,1,1,2,2,3,4,5,6,7,8,9,11,12,14,15,17,19,
 21]

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Last modified February 25 08:33 EST 2021. Contains 341606 sequences. (Running on oeis4.)