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.

A340956 Integers n such that s(n^2) = s(n)*(s(n)+1)/2, where s(n) is the sum of binary digits of n (A000120).

Table of values

n a(n)
1 0
2 1
3 2
4 4
5 5
6 8
7 9
8 10
9 16
10 17
11 18
12 20
13 21
14 32
15 33
16 34
17 36
18 37
19 40
20 42
21 64
22 65
23 66
24 68
25 69
26 72
27 73
28 74
29 80
30 81
31 84
32 128
33 129
34 130
35 132
36 133
37 136
38 137
39 138
40 144
41 146
42 148
43 160
44 161
45 162
46 168
47 256
48 257
49 258
50 260
51 261
52 264
53 265
54 266
55 272
56 273
57 274
58 276
59 277
60 288
61 289
62 292
63 293
64 296
65 320
66 321
67 322
68 324
69 336
70 337
71 512
72 513
73 514
74 516

List of values

[0, 1, 2, 4, 5, 8, 9, 10, 16, 17, 18, 20, 21, 32, 33, 34, 36, 37, 40, 42, 64, 65, 66, 68, 69, 72, 73, 74, 80, 81, 84, 128, 129, 130, 132, 133, 136, 137, 138, 144, 146, 148, 160, 161, 162, 168, 256, 257, 258, 260, 261, 264, 265, 266, 272, 273, 274, 276, 277, 288, 289, 292, 293, 296, 320, 321, 322, 324, 336, 337, 512, 513, 514, 516]