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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.

A027698 Numbers k such that the k-th prime has an odd number of 1's in its binary expansion.

Table of values

n a(n)
1 1
2 4
3 5
4 6
5 8
6 11
7 12
8 13
9 15
10 17
11 18
12 19
13 21
14 22
15 25
16 27
17 28
18 29
19 31
20 32
21 33
22 36
23 37
24 39
25 40
26 41
27 42
28 43
29 44
30 46
31 47
32 48
33 49
34 50
35 51
36 52
37 53
38 54
39 58
40 61
41 63
42 65
43 67
44 73
45 75
46 78
47 80
48 81
49 82
50 83
51 84
52 85
53 86
54 88
55 90
56 93
57 94
58 95
59 98
60 100
61 102
62 103
63 104
64 106
65 107
66 110
67 111
68 112

List of values

[1, 4, 5, 6, 8, 11, 12, 13, 15, 17, 18, 19, 21, 22, 25, 27, 28, 29, 31, 32, 33, 36, 37, 39, 40, 41, 42, 43, 44, 46, 47, 48, 49, 50, 51, 52, 53, 54, 58, 61, 63, 65, 67, 73, 75, 78, 80, 81, 82, 83, 84, 85, 86, 88, 90, 93, 94, 95, 98, 100, 102, 103, 104, 106, 107, 110, 111, 112]

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

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