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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.

A173069 a(n) = A139251(n) - A105321(n).

Table of values

n a(n)
0 -1
1 -2
2 -2
3 -2
4 -2
5 -2
6 0
7 0
8 -2
9 -2
10 0
11 0
12 0
13 4
14 12
15 8
16 -2
17 -2
18 0
19 0
20 0
21 4
22 12
23 8
24 0
25 4
26 12
27 12
28 16
29 36
30 56
31 32
32 -2
33 -2
34 0
35 0
36 0
37 4
38 12
39 8
40 0
41 4
42 12
43 12
44 16
45 36
46 56
47 32
48 0
49 4
50 12
51 12
52 16
53 36
54 56
55 36
56 16
57 36
58 60
59 64
60 92
61 160
62 192
63 96
64 -2
65 -2
66 0
67 0
68 0
69 4
70 12
71 8
72 0
73 4
74 12

List of values

[-1, -2, -2, -2, -2, -2, 0, 0, -2, -2, 0, 0, 0, 4, 12, 8, -2, -2, 0, 0, 0, 4, 12, 8, 0, 4, 12, 12, 16, 36, 56, 32, -2, -2, 0, 0, 0, 4, 12, 8, 0, 4, 12, 12, 16, 36, 56, 32, 0, 4, 12, 12, 16, 36, 56, 36, 16, 36, 60, 64, 92, 160, 192, 96, -2, -2, 0, 0, 0, 4, 12, 8, 0, 4, 12]

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