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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.

A283655 a(n) = b(b(n+1)) - b(n-b(n)+1) where b(n) = A004001(n).

Table of values

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

List of values

[0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2, 2, 2, 2, 2, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 4, 4, 4, 5, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 7, 7, 7, 7, 7]

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