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.

A371291 Numbers whose binary indices are connected, where two numbers are connected iff they have a common factor.

Table of values

n a(n)
1 1
2 2
3 4
4 8
5 10
6 16
7 32
8 34
9 36
10 38
11 40
12 42
13 44
14 46
15 64
16 128
17 130
18 136
19 138
20 160
21 162
22 164
23 166
24 168
25 170
26 172
27 174
28 256
29 260
30 288
31 290
32 292
33 294
34 296
35 298
36 300
37 302
38 416
39 418
40 420
41 422
42 424
43 426
44 428
45 430
46 512
47 514
48 520
49 522
50 528
51 530
52 536
53 538
54 544
55 546
56 548

List of values

[1, 2, 4, 8, 10, 16, 32, 34, 36, 38, 40, 42, 44, 46, 64, 128, 130, 136, 138, 160, 162, 164, 166, 168, 170, 172, 174, 256, 260, 288, 290, 292, 294, 296, 298, 300, 302, 416, 418, 420, 422, 424, 426, 428, 430, 512, 514, 520, 522, 528, 530, 536, 538, 544, 546, 548]

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

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