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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.

A300858 a(n) = A243823(n) - A243822(n).

Table of values

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

List of values

[0, 0, 0, 0, 0, -1, 0, 1, 1, -1, 0, -1, 0, 1, 2, 4, 0, -1, 0, 3, 4, 3, 0, 3, 3, 5, 6, 7, 0, -5, 0, 11, 6, 7, 6, 6, 0, 9, 8, 11, 0, 1, 0, 13, 12, 13, 0, 13, 5, 13, 12, 17, 0, 13, 10, 19, 14, 19, 0, 5, 0, 21, 18, 26, 12, 11, 0, 23, 18, 15, 0, 25, 0, 25, 24, 27]

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