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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.

A162308 Number of twin primes A001097 smaller than the non-twin prime A007510(n).

Table of values

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

List of values

[0, 7, 9, 11, 11, 13, 15, 15, 15, 15, 19, 19, 19, 23, 23, 23, 23, 29, 29, 31, 33, 33, 33, 35, 37, 37, 39, 39, 39, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 45, 45, 45, 45, 47, 47, 47, 47, 47, 47, 47, 49, 49, 49, 49, 51, 51, 51, 53, 53, 55, 57, 57, 59, 59, 59, 59, 59, 59, 59]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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