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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.

A214681 a(n) is obtained from n by removing factors of 2 and 3 that do not contribute to a factor of 6.

Table of values

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

List of values

[1, 1, 1, 1, 5, 6, 7, 1, 1, 5, 11, 6, 13, 7, 5, 1, 17, 6, 19, 5, 7, 11, 23, 6, 25, 13, 1, 7, 29, 30, 31, 1, 11, 17, 35, 36, 37, 19, 13, 5, 41, 42, 43, 11, 5, 23, 47, 6, 49, 25, 17, 13, 53, 6, 55, 7, 19, 29, 59, 30, 61, 31, 7, 1, 65, 66, 67, 17, 23, 35, 71, 36]

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