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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.

A297237 Down-variation of the base-13 digits of n; see Comments.

Table of values

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

List of values

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

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