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.

A172187 Numbers k such that k and k+1 are squarefree but 2*k+1 is not.

Table of values

n a(n)
1 13
2 22
3 37
4 58
5 73
6 85
7 94
8 122
9 130
10 137
11 157
12 166
13 181
14 193
15 202
16 229
17 237
18 238
19 253
20 262
21 265
22 301
23 302
24 310
25 318
26 346
27 373
28 382
29 409
30 418
31 433
32 437
33 445
34 454
35 462
36 465
37 481
38 514
39 517
40 526
41 537
42 541
43 553
44 562
45 589
46 598
47 634
48 661
49 662
50 670
51 697
52 706
53 733

List of values

[13, 22, 37, 58, 73, 85, 94, 122, 130, 137, 157, 166, 181, 193, 202, 229, 237, 238, 253, 262, 265, 301, 302, 310, 318, 346, 373, 382, 409, 418, 433, 437, 445, 454, 462, 465, 481, 514, 517, 526, 537, 541, 553, 562, 589, 598, 634, 661, 662, 670, 697, 706, 733]