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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.

A378184 With p(n) = A002144(n) = n-th Pythagorean prime, a(n) is the least k such p(n) + k is a Pythagorean prime and 2 p(n) + k + 1 is a non-Pythagorean prime; or a(n) = 0 if there is no such k.

Table of values

n a(n)
1 8
2 4
3 12
4 8
5 4
6 20
7 20
8 28
9 16
10 12
11 4
12 8
13 4
14 24
15 36
16 8
17 16
18 20
19 16
20 76
21 36
22 4
23 24
24 16
25 56
26 8
27 16
28 36
29 20
30 4
31 56
32 16
33 40
34 20
35 76
36 8
37 64
38 8
39 40
40 40
41 16
42 8
43 4
44 48
45 12
46 20
47 36
48 24
49 16
50 116
51 76
52 4
53 24
54 20
55 20
56 100
57 100
58 84
59 56
60 52
61 64
62 16
63 8
64 4
65 24
66 12
67 44
68 56

List of values

[8, 4, 12, 8, 4, 20, 20, 28, 16, 12, 4, 8, 4, 24, 36, 8, 16, 20, 16, 76, 36, 4, 24, 16, 56, 8, 16, 36, 20, 4, 56, 16, 40, 20, 76, 8, 64, 8, 40, 40, 16, 8, 4, 48, 12, 20, 36, 24, 16, 116, 76, 4, 24, 20, 20, 100, 100, 84, 56, 52, 64, 16, 8, 4, 24, 12, 44, 56]

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