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A025819 as a simple table

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

[1,0,1,0,1,0,1,1,1,1,1,2,1,2,2,2,2,2,3,2,3,3,4,3,
 4,4,4,4,5,5,5,5,6,6,6,7,7,7,7,8,8,8,9,9,10,9,11,
 10,11,11,12,12,12,13,13,14,14,15,15,15,16,16,17,
 17,18,18,19,19,20]

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Last modified October 21 18:36 EDT 2021. Contains 348155 sequences. (Running on oeis4.)