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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.

A336019 a(n) is the smallest integer k (k>=2) such that 13...3 (1 followed by n 3's) mod k is even.

Table of values

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

List of values

[7, 7, 11, 9, 7, 17, 7, 7, 11, 9, 7, 17, 7, 7, 11, 9, 7, 17, 7, 7, 11, 9, 7, 17, 7, 7, 11, 9, 7, 17, 7, 7, 11, 9, 7, 23, 7, 7, 11, 9, 7, 17, 7, 7, 11, 9, 7, 23, 7, 7, 11, 9, 7, 17, 7, 7, 11, 9, 7, 17, 7, 7, 11, 9, 7, 17, 7, 7, 11, 9, 7, 17, 7, 7, 11, 9, 7, 17, 7, 7]

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