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.

A176258 Numbers of the form 4k+1 with greatest prime divisor of the form 4m-1.

Table of values

n a(n)
1 9
2 21
3 33
4 49
5 57
6 69
7 77
8 81
9 93
10 105
11 121
12 129
13 133
14 141
15 161
16 165
17 177
18 189
19 201
20 209
21 213
22 217
23 237
24 245
25 249
26 253
27 285
28 297
29 301
30 309
31 321
32 329
33 341
34 345
35 361
36 381
37 385
38 393
39 413
40 417
41 437
42 441
43 453
44 465
45 469
46 473
47 489
48 497
49 501
50 513
51 517
52 525
53 529
54 537
55 553
56 573

List of values

[9, 21, 33, 49, 57, 69, 77, 81, 93, 105, 121, 129, 133, 141, 161, 165, 177, 189, 201, 209, 213, 217, 237, 245, 249, 253, 285, 297, 301, 309, 321, 329, 341, 345, 361, 381, 385, 393, 413, 417, 437, 441, 453, 465, 469, 473, 489, 497, 501, 513, 517, 525, 529, 537, 553, 573]