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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.

A350101 Numbers k such that 2*k-1 and 2*k+1 are squarefree semiprimes (A046388).

Table of values

n a(n)
1 17
2 28
3 43
4 46
5 47
6 71
7 72
8 80
9 92
10 93
11 101
12 102
13 107
14 108
15 109
16 110
17 118
18 124
19 133
20 150
21 151
22 152
23 160
24 161
25 164
26 170
27 196
28 197
29 206
30 207
31 208
32 223
33 226
34 235
35 236
36 258
37 259
38 267
39 268
40 272
41 276
42 290
43 291
44 295
45 317
46 334
47 335
48 340
49 343
50 344
51 348
52 349
53 361
54 377
55 390

List of values

[17, 28, 43, 46, 47, 71, 72, 80, 92, 93, 101, 102, 107, 108, 109, 110, 118, 124, 133, 150, 151, 152, 160, 161, 164, 170, 196, 197, 206, 207, 208, 223, 226, 235, 236, 258, 259, 267, 268, 272, 276, 290, 291, 295, 317, 334, 335, 340, 343, 344, 348, 349, 361, 377, 390]

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

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