cp's OEIS Frontend

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.

A159999 Number of numbers not greater than n occurring in Collatz (3x+1) trajectory starting with n.

Table of values

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

List of values

[1, 2, 3, 3, 4, 6, 5, 4, 7, 6, 7, 9, 7, 10, 7, 5, 9, 14, 11, 8, 6, 12, 9, 11, 14, 10, 10, 16, 14, 11, 10, 6, 17, 12, 9, 20, 18, 17, 18, 9, 13, 8, 20, 16, 14, 12, 13, 12, 20, 21, 18, 12, 10, 18, 15, 20, 24, 19, 22, 16, 14, 17, 15, 7, 23, 25, 22, 15, 13, 12, 16, 23]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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