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A025840 as a simple table

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

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

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Last modified June 19 19:50 EDT 2013. Contains 226416 sequences.