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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.

A339314 a(n) is the least semiprime k > n-th semiprime s = A001358(n) such that k-s and k+s are both semiprimes.

Table of values

n a(n)
1 10
2 15
3 86
4 25
5 35
6 106
7 25
8 55
9 94
10 51
11 58
12 85
13 39
14 77
15 94
16 95
17 74
18 55
19 106
20 178
21 143
22 155
23 69
24 118
25 95
26 142
27 121
28 118
29 119
30 91
31 146
32 142
33 115
34 206
35 115
36 115
37 206
38 169
39 134
40 146
41 143
42 178
43 133
44 158
45 155
46 262
47 177
48 158
49 178
50 155
51 159
52 183
53 254
54 194
55 205
56 202
57 226
58 187
59 298
60 206
61 226
62 209

List of values

[10, 15, 86, 25, 35, 106, 25, 55, 94, 51, 58, 85, 39, 77, 94, 95, 74, 55, 106, 178, 143, 155, 69, 118, 95, 142, 121, 118, 119, 91, 146, 142, 115, 206, 115, 115, 206, 169, 134, 146, 143, 178, 133, 158, 155, 262, 177, 158, 178, 155, 159, 183, 254, 194, 205, 202, 226, 187, 298, 206, 226, 209]

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

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