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.

A319386 Semiprimes k = pq with primes p < q such that p-1 does not divide q-1.

Table of values

n a(n)
1 35
2 55
3 77
4 95
5 115
6 119
7 143
8 155
9 161
10 187
11 203
12 209
13 215
14 221
15 235
16 247
17 253
18 287
19 295
20 299
21 319
22 323
23 329
24 335
25 355
26 371
27 377
28 391
29 395
30 403
31 407
32 413
33 415
34 437
35 473
36 493
37 497
38 515
39 517
40 527
41 533
42 535
43 551
44 559
45 581
46 583
47 589
48 611
49 623
50 629
51 635
52 649
53 655
54 667
55 689
56 695
57 697
58 707
59 713
60 731

List of values

[35, 55, 77, 95, 115, 119, 143, 155, 161, 187, 203, 209, 215, 221, 235, 247, 253, 287, 295, 299, 319, 323, 329, 335, 355, 371, 377, 391, 395, 403, 407, 413, 415, 437, 473, 493, 497, 515, 517, 527, 533, 535, 551, 559, 581, 583, 589, 611, 623, 629, 635, 649, 655, 667, 689, 695, 697, 707, 713, 731]

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

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