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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.

A068066 The sum or half the sum of n consecutive primes starting at a(n) is prime.

Table of values

n a(n)
1 2
2 2
3 5
4 2
5 5
6 2
7 17
8 83
9 3
10 3
11 5
12 2
13 29
14 2
15 3
16 11
17 3
18 3
19 11
20 23
21 7
22 5
23 7
24 11
25 5
26 3
27 7
28 3
29 13
30 3
31 13
32 5
33 7
34 17
35 5
36 3
37 5
38 73
39 13
40 5
41 7
42 5
43 7
44 5
45 7
46 29
47 7
48 53
49 11
50 29
51 17
52 31
53 3
54 23
55 3
56 47
57 97
58 5
59 29
60 2
61 3
62 37
63 13
64 2
65 3
66 17
67 19
68 5
69 19
70 71
71 3
72 47
73 5
74 19
75 3
76 59
77 23
78 89
79 7
80 19
81 11
82 37
83 53
84 3

List of values

[2, 2, 5, 2, 5, 2, 17, 83, 3, 3, 5, 2, 29, 2, 3, 11, 3, 3, 11, 23, 7, 5, 7, 11, 5, 3, 7, 3, 13, 3, 13, 5, 7, 17, 5, 3, 5, 73, 13, 5, 7, 5, 7, 5, 7, 29, 7, 53, 11, 29, 17, 31, 3, 23, 3, 47, 97, 5, 29, 2, 3, 37, 13, 2, 3, 17, 19, 5, 19, 71, 3, 47, 5, 19, 3, 59, 23, 89, 7, 19, 11, 37, 53, 3]

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