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A240233 a(n) is the smallest prime number such that both a(n) + 6n and a(n) + 12n are prime numbers.

Table of values

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

List of values

[5, 5, 5, 5, 7, 7, 5, 5, 5, 7, 5, 7, 11, 5, 11, 5, 7, 23, 13, 11, 5, 5, 41, 5, 7, 37, 29, 11, 5, 13, 7, 5, 13, 23, 13, 7, 5, 5, 23, 11, 11, 5, 5, 13, 7, 5, 29, 23, 13, 7, 5, 19, 41, 13, 17, 11, 7, 5, 19, 7, 7, 7, 5, 5, 7, 5, 7, 11, 29, 13, 5, 17, 5, 19, 7, 7, 5]

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