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.

A256387 Numbers n such that no prime can be the arithmetic mean of 2 semiprimes whose difference is 2*n.

Table of values

n a(n)
1 5
2 7
3 11
4 13
5 17
6 19
7 21
8 23
9 25
10 29
11 31
12 33
13 35
14 37
15 41
16 43
17 45
18 47
19 49
20 51
21 53
22 55
23 59
24 61
25 63
26 65
27 67
28 71
29 73
30 75
31 77
32 79
33 81
34 83
35 85
36 87
37 89
38 91
39 93
40 95
41 97
42 101
43 103
44 107
45 109
46 111
47 113
48 115
49 117
50 119
51 121
52 123
53 125
54 127
55 129
56 131
57 133
58 137
59 139
60 141
61 143

List of values

[5, 7, 11, 13, 17, 19, 21, 23, 25, 29, 31, 33, 35, 37, 41, 43, 45, 47, 49, 51, 53, 55, 59, 61, 63, 65, 67, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 101, 103, 107, 109, 111, 113, 115, 117, 119, 121, 123, 125, 127, 129, 131, 133, 137, 139, 141, 143]

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

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