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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.

A352449 2^k appears in the binary expansion of a(n) iff 2^k appears in the binary expansion of n and k AND n = k (where AND denotes the bitwise AND operator).

Table of values

n a(n)
0 0
1 1
2 0
3 3
4 0
5 1
6 4
7 7
8 0
9 1
10 0
11 11
12 0
13 1
14 4
15 15
16 0
17 1
18 0
19 3
20 16
21 17
22 20
23 23
24 0
25 1
26 0
27 11
28 16
29 17
30 20
31 31
32 0
33 1
34 0
35 3
36 0
37 33
38 4
39 39
40 0
41 1
42 0
43 11
44 0
45 33
46 4
47 47
48 0
49 1
50 0
51 3
52 16
53 49
54 20
55 55
56 0
57 1
58 0
59 11
60 16
61 49
62 20
63 63
64 0
65 1
66 0
67 3
68 0
69 1
70 68
71 71
72 0
73 1
74 0
75 11
76 0
77 1

List of values

[0, 1, 0, 3, 0, 1, 4, 7, 0, 1, 0, 11, 0, 1, 4, 15, 0, 1, 0, 3, 16, 17, 20, 23, 0, 1, 0, 11, 16, 17, 20, 31, 0, 1, 0, 3, 0, 33, 4, 39, 0, 1, 0, 11, 0, 33, 4, 47, 0, 1, 0, 3, 16, 49, 20, 55, 0, 1, 0, 11, 16, 49, 20, 63, 0, 1, 0, 3, 0, 1, 68, 71, 0, 1, 0, 11, 0, 1]

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