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A195840 as a simple table

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

[1,1,1,1,1,1,1,1,2,1,3,1,4,1,-1,4,1,-1,4,1,-1,4,1,
 -1,4,2,-1,5,3,-1,7,4,-1,10,4,-2,12,4,-3,13,4,-4,
 13,4,-4,13,5,-4,14,7,-4,-1,16,10,-4,-1,21,12,-5,
 -1,27,13,-7,-1,32,13,-10,-1,34]

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Last modified March 29 15:16 EDT 2020. Contains 333107 sequences. (Running on oeis4.)