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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.

A083567 Let B(k) be the number of binary digits in k equal to 1. This is the sequence of positive integers k such that 2B(k)=B(k^2).

Table of values

n a(n)
1 21
2 37
3 42
4 45
5 53
6 69
7 73
8 74
9 81
10 83
11 84
12 90
13 106
14 133
15 137
16 138
17 141
18 146
19 148
20 155
21 161
22 162
23 165
24 166
25 168
26 177
27 180
28 211
29 212
30 261
31 265
32 266
33 269
34 273
35 274
36 276
37 281
38 282
39 289
40 291
41 292
42 295
43 296
44 299
45 310
46 321
47 322
48 324
49 330
50 332
51 336
52 354
53 359
54 360

List of values

[21, 37, 42, 45, 53, 69, 73, 74, 81, 83, 84, 90, 106, 133, 137, 138, 141, 146, 148, 155, 161, 162, 165, 166, 168, 177, 180, 211, 212, 261, 265, 266, 269, 273, 274, 276, 281, 282, 289, 291, 292, 295, 296, 299, 310, 321, 322, 324, 330, 332, 336, 354, 359, 360]

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

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