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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.

A237819 Number of primes p < n such that floor(sqrt(n-p)) is a Sophie Germain prime.

Table of values

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

List of values

[0, 0, 0, 0, 0, 1, 2, 2, 3, 3, 4, 4, 4, 4, 5, 5, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 5, 6, 5, 6, 6, 7, 7, 7, 7, 8, 8, 8, 6, 6, 6, 7, 6, 7, 7, 7, 6, 7, 6, 6, 7, 7, 5, 6, 5, 6, 6, 6, 4, 4, 4, 5, 5, 5, 5, 6, 5, 6, 5, 5, 6, 7, 6, 6, 6, 6, 5, 6, 5, 5]

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