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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.

A172015 Numbers of the form 6*k-+1 such that 6*k-1=prime and 6*k+1=nonprime.

Table of values

n a(n)
1 23
2 25
3 47
4 49
5 53
6 55
7 83
8 85
9 89
10 91
11 113
12 115
13 131
14 133
15 167
16 169
17 173
18 175
19 233
20 235
21 251
22 253
23 257
24 259
25 263
26 265
27 293
28 295
29 317
30 319
31 353
32 355
33 359
34 361
35 383
36 385
37 389
38 391
39 401
40 403
41 443
42 445
43 449
44 451
45 467
46 469
47 479
48 481
49 491
50 493
51 503
52 505
53 509
54 511

List of values

[23, 25, 47, 49, 53, 55, 83, 85, 89, 91, 113, 115, 131, 133, 167, 169, 173, 175, 233, 235, 251, 253, 257, 259, 263, 265, 293, 295, 317, 319, 353, 355, 359, 361, 383, 385, 389, 391, 401, 403, 443, 445, 449, 451, 467, 469, 479, 481, 491, 493, 503, 505, 509, 511]

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

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