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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.

A359048 a(n) is the minimum denominator d such that the decimal expansion of n/d is eventually periodic with periodicity not equal to zero.

Table of values

n a(n)
1 3
2 3
3 7
4 3
5 3
6 7
7 3
8 3
9 7
10 3
11 3
12 7
13 3
14 3
15 7
16 3
17 3
18 7
19 3
20 3
21 9
22 3
23 3
24 7
25 3
26 3
27 7
28 3
29 3
30 7
31 3
32 3
33 7
34 3
35 3
36 7
37 3
38 3
39 7
40 3
41 3
42 9
43 3
44 3
45 7
46 3
47 3
48 7
49 3
50 3
51 7
52 3
53 3
54 7
55 3
56 3
57 7
58 3
59 3
60 7
61 3
62 3
63 11
64 3
65 3
66 7
67 3
68 3
69 7
70 3
71 3
72 7
73 3
74 3
75 7
76 3
77 3
78 7
79 3
80 3
81 7
82 3
83 3
84 9
85 3
86 3
87 7
88 3
89 3
90 7

List of values

[3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 9, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 9, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 11, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 7, 3, 3, 9, 3, 3, 7, 3, 3, 7]

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