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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.

A210487 a(n) is the smallest possible greatest prime factor of prime(n)^2 - prime(k)^2 for 0 < k < n.

Table of values

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

List of values

[5, 2, 3, 3, 3, 5, 3, 5, 5, 3, 5, 3, 3, 5, 5, 3, 5, 3, 7, 3, 5, 3, 3, 5, 5, 5, 5, 3, 5, 5, 5, 5, 5, 5, 5, 7, 5, 5, 5, 5, 5, 7, 3, 5, 5, 7, 7, 5, 7, 5, 7, 5, 7, 5, 5, 5, 5, 5, 11, 3, 5, 3, 11, 5, 5, 5, 7, 5, 7, 5, 7, 7, 7, 7, 5, 5, 7, 5, 5, 7, 5, 7, 3, 5, 5, 5]

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