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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.

A289815 The first of a pair of coprime numbers whose factorizations depend on the ternary representation of n (see Comments for precise definition).

Table of values

n a(n)
0 1
1 2
2 1
3 3
4 6
5 3
6 1
7 2
8 1
9 4
10 10
11 5
12 12
13 30
14 15
15 4
16 10
17 5
18 1
19 2
20 1
21 3
22 6
23 3
24 1
25 2
26 1
27 5
28 14
29 7
30 15
31 42
32 21
33 5
34 14
35 7
36 20
37 70
38 35
39 60
40 210
41 105
42 20
43 70
44 35
45 5
46 14
47 7
48 15
49 42
50 21
51 5
52 14
53 7
54 1
55 2
56 1
57 3
58 6
59 3
60 1
61 2
62 1
63 4
64 10
65 5
66 12
67 30
68 15
69 4
70 10
71 5
72 1
73 2
74 1
75 3
76 6

List of values

[1, 2, 1, 3, 6, 3, 1, 2, 1, 4, 10, 5, 12, 30, 15, 4, 10, 5, 1, 2, 1, 3, 6, 3, 1, 2, 1, 5, 14, 7, 15, 42, 21, 5, 14, 7, 20, 70, 35, 60, 210, 105, 20, 70, 35, 5, 14, 7, 15, 42, 21, 5, 14, 7, 1, 2, 1, 3, 6, 3, 1, 2, 1, 4, 10, 5, 12, 30, 15, 4, 10, 5, 1, 2, 1, 3, 6]

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