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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.

A105023 a(n) = A102370(n) - n. Or, 2*A103185(n).

Table of values

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

List of values

[0, 2, 4, 2, 0, 10, 4, 2, 0, 2, 4, 2, 16, 10, 4, 2, 0, 2, 4, 2, 0, 10, 4, 2, 0, 2, 4, 34, 16, 10, 4, 2, 0, 2, 4, 2, 0, 10, 4, 2, 0, 2, 4, 2, 16, 10, 4, 2, 0, 2, 4, 2, 0, 10, 4, 2, 0, 2, 68, 34, 16, 10, 4, 2, 0, 2, 4, 2, 0, 10, 4, 2, 0, 2, 4, 2, 16, 10, 4, 2, 0, 2, 4, 2, 0, 10, 4, 2, 0, 2, 4, 34, 16, 10, 4]

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