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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A359289 Number of divisors of 4*n-2 of form 4*k+1.

Table of values

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

List of values

[1, 1, 2, 1, 2, 1, 2, 2, 2, 1, 2, 1, 3, 2, 2, 1, 2, 2, 2, 2, 2, 1, 4, 1, 2, 2, 2, 2, 2, 1, 2, 3, 4, 1, 2, 1, 2, 3, 2, 1, 3, 1, 4, 2, 2, 2, 2, 2, 2, 3, 2, 1, 4, 1, 2, 2, 2, 2, 4, 2, 2, 2, 4, 1, 2, 1, 2, 4, 2, 1, 2, 2, 4, 3, 2, 1, 4, 2, 2, 2, 2, 1, 4, 1, 3, 3, 2, 3, 2, 1]

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