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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.

A221469 Number of increasing peak values in the Collatz (3x+1) iteration of n.

Table of values

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

List of values

[0, 0, 2, 0, 1, 2, 3, 0, 3, 1, 2, 1, 1, 3, 4, 0, 1, 3, 2, 0, 1, 2, 3, 0, 2, 1, 15, 2, 1, 4, 14, 0, 1, 1, 2, 1, 1, 2, 4, 0, 14, 1, 2, 1, 1, 3, 13, 0, 1, 2, 2, 0, 1, 15, 13, 0, 2, 1, 3, 3, 1, 14, 12, 0, 1, 1, 2, 0, 1, 2, 12, 0, 13, 1, 2, 1, 1, 4, 4, 0, 1, 14, 12]

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