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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.

A243865 Number of twin divisors of n.

Table of values

n a(n)
1 0
2 0
3 2
4 2
5 0
6 2
7 0
8 2
9 2
10 0
11 0
12 5
13 0
14 0
15 3
16 2
17 0
18 2
19 0
20 2
21 2
22 0
23 0
24 6
25 0
26 0
27 2
28 2
29 0
30 3
31 0
32 2
33 2
34 0
35 2
36 5
37 0
38 0
39 2
40 4
41 0
42 2
43 0
44 2
45 3
46 0
47 0
48 6
49 0
50 0
51 2
52 2
53 0
54 2
55 0
56 2
57 2
58 0
59 0
60 8
61 0
62 0
63 4
64 2
65 0
66 2
67 0
68 2
69 2
70 2
71 0
72 6
73 0
74 0
75 3
76 2
77 0
78 2
79 0
80 4
81 2
82 0
83 0
84 7
85 0
86 0
87 2
88 2
89 0
90 3
91 0
92 2
93 2
94 0
95 0
96 6

List of values

[0, 0, 2, 2, 0, 2, 0, 2, 2, 0, 0, 5, 0, 0, 3, 2, 0, 2, 0, 2, 2, 0, 0, 6, 0, 0, 2, 2, 0, 3, 0, 2, 2, 0, 2, 5, 0, 0, 2, 4, 0, 2, 0, 2, 3, 0, 0, 6, 0, 0, 2, 2, 0, 2, 0, 2, 2, 0, 0, 8, 0, 0, 4, 2, 0, 2, 0, 2, 2, 2, 0, 6, 0, 0, 3, 2, 0, 2, 0, 4, 2, 0, 0, 7, 0, 0, 2, 2, 0, 3, 0, 2, 2, 0, 0, 6]

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