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.

A181782 Odd composite numbers n that are strong pseudoprimes to some base a, 2 <= a <= n-2.

Table of values

n a(n)
1 25
2 49
3 65
4 85
5 91
6 121
7 125
8 133
9 145
10 169
11 175
12 185
13 205
14 217
15 221
16 231
17 247
18 259
19 265
20 289
21 301
22 305
23 325
24 341
25 343
26 361
27 365
28 377
29 385
30 403
31 425
32 427
33 435
34 445
35 451
36 469
37 475
38 481
39 485
40 493
41 505
42 511
43 529
44 533
45 545
46 553
47 559
48 561
49 565
50 589
51 595
52 625
53 629
54 637
55 645
56 651
57 671
58 679
59 685
60 689
61 697

List of values

[25, 49, 65, 85, 91, 121, 125, 133, 145, 169, 175, 185, 205, 217, 221, 231, 247, 259, 265, 289, 301, 305, 325, 341, 343, 361, 365, 377, 385, 403, 425, 427, 435, 445, 451, 469, 475, 481, 485, 493, 505, 511, 529, 533, 545, 553, 559, 561, 565, 589, 595, 625, 629, 637, 645, 651, 671, 679, 685, 689, 697]

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

Content is available under The OEIS End-User License Agreement.