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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.

A367909 Numbers n such that there is more than one way to choose a different binary index of each binary index of n.

Table of values

n a(n)
1 4
2 12
3 16
4 18
5 20
6 32
7 33
8 36
9 48
10 52
11 64
12 65
13 66
14 68
15 72
16 76
17 80
18 82
19 84
20 96
21 97
22 100
23 112
24 132
25 140
26 144
27 146
28 148
29 160
30 161
31 164
32 176
33 180
34 192
35 193
36 194
37 196
38 200
39 204
40 208
41 210
42 212
43 224
44 225
45 228
46 240
47 256
48 258
49 260
50 264
51 266
52 268
53 272
54 274
55 276
56 288

List of values

[4, 12, 16, 18, 20, 32, 33, 36, 48, 52, 64, 65, 66, 68, 72, 76, 80, 82, 84, 96, 97, 100, 112, 132, 140, 144, 146, 148, 160, 161, 164, 176, 180, 192, 193, 194, 196, 200, 204, 208, 210, 212, 224, 225, 228, 240, 256, 258, 260, 264, 266, 268, 272, 274, 276, 288]

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

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