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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.

A300817 Smallest prime p such that p + n^2 is prime, or 0 if no such prime exists.

Table of values

n a(n)
0 2
1 2
2 3
3 2
4 3
5 0
6 5
7 0
8 3
9 2
10 3
11 0
12 5
13 0
14 3
15 2
16 7
17 0
18 7
19 0
20 19
21 2
22 3
23 0
24 11
25 0
26 7
27 0
28 3
29 0
30 7
31 0
32 7
33 2
34 7
35 0
36 5
37 0
38 3
39 2
40 7
41 0
42 13
43 0
44 13
45 2
46 13
47 0
48 5
49 0
50 3
51 0
52 3
53 0
54 11
55 0
56 31
57 2
58 7
59 0
60 7
61 0
62 3
63 0
64 3
65 0
66 7
67 0
68 13
69 0
70 3
71 0
72 5
73 0
74 3
75 0
76 3
77 0
78 5
79 0
80 73
81 2
82 13
83 0
84 13
85 0
86 37
87 0
88 13
89 0

List of values

[2, 2, 3, 2, 3, 0, 5, 0, 3, 2, 3, 0, 5, 0, 3, 2, 7, 0, 7, 0, 19, 2, 3, 0, 11, 0, 7, 0, 3, 0, 7, 0, 7, 2, 7, 0, 5, 0, 3, 2, 7, 0, 13, 0, 13, 2, 13, 0, 5, 0, 3, 0, 3, 0, 11, 0, 31, 2, 7, 0, 7, 0, 3, 0, 3, 0, 7, 0, 13, 0, 3, 0, 5, 0, 3, 0, 3, 0, 5, 0, 73, 2, 13, 0, 13, 0, 37, 0, 13, 0]

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