cp's OEIS Frontend

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.

A167918 a(n) is smallest index k > n of k-th prime with f(n,k):=(p(k)+p(k+1))/(p(n)+p(n+1)) an integer >=2 (n=1,2,...).

Table of values

n a(n)
1 6
2 5
3 5
4 7
5 17
6 10
7 20
8 13
9 55
10 17
11 26
12 44
13 81
14 41
15 35
16 102
17 30
18 43
19 33
20 34
21 49
22 66
23 173
24 42
25 45
26 127
27 65
28 66
29 228
30 52
31 117
32 253
33 80
34 61
35 62
36 89
37 162
38 94
39 123
40 177
41 256
42 212
43 162
44 137
45 138
46 112
47 212
48 122
49 189
50 89
51 160
52 162
53 201
54 170
55 137
56 99
57 140
58 142
59 405
60 146
61 190
62 109

List of values

[6, 5, 5, 7, 17, 10, 20, 13, 55, 17, 26, 44, 81, 41, 35, 102, 30, 43, 33, 34, 49, 66, 173, 42, 45, 127, 65, 66, 228, 52, 117, 253, 80, 61, 62, 89, 162, 94, 123, 177, 256, 212, 162, 137, 138, 112, 212, 122, 189, 89, 160, 162, 201, 170, 137, 99, 140, 142, 405, 146, 190, 109]