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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.

A089091 a(n) is the smallest composite number coprime to n and n+1.

Table of values

n a(n)
1 9
2 25
3 25
4 9
5 49
6 25
7 9
8 25
9 49
10 9
11 25
12 25
13 9
14 121
15 49
16 9
17 25
18 25
19 9
20 121
21 25
22 9
23 25
24 49
25 9
26 25
27 25
28 9
29 49
30 49
31 9
32 25
33 25
34 9
35 121
36 25
37 9
38 25
39 49
40 9
41 25
42 25
43 9
44 49
45 49
46 9
47 25
48 25
49 9
50 49
51 25
52 9
53 25
54 49
55 9
56 25
57 25
58 9
59 49
60 49
61 9
62 25
63 25
64 9
65 49
66 25
67 9
68 25
69 121
70 9
71 25
72 25
73 9
74 49
75 49
76 9
77 25
78 25

List of values

[9, 25, 25, 9, 49, 25, 9, 25, 49, 9, 25, 25, 9, 121, 49, 9, 25, 25, 9, 121, 25, 9, 25, 49, 9, 25, 25, 9, 49, 49, 9, 25, 25, 9, 121, 25, 9, 25, 49, 9, 25, 25, 9, 49, 49, 9, 25, 25, 9, 49, 25, 9, 25, 49, 9, 25, 25, 9, 49, 49, 9, 25, 25, 9, 49, 25, 9, 25, 121, 9, 25, 25, 9, 49, 49, 9, 25, 25]

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