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.

A127957 Numbers k such that (2^prime(k) + 1)/3 is composite.

Table of values

n a(n)
1 10
2 12
3 13
4 15
5 16
6 17
7 19
8 20
9 21
10 23
11 24
12 25
13 27
14 28
15 29
16 30
17 32
18 33
19 34
20 35
21 36
22 37
23 38
24 40
25 41
26 42
27 44
28 45
29 47
30 48
31 49
32 50
33 51
34 52
35 53
36 54
37 55
38 56
39 57
40 58
41 59
42 60
43 61
44 62
45 63
46 64
47 66
48 67
49 68
50 70
51 71
52 72
53 73
54 74
55 75
56 76
57 77
58 78
59 79
60 80
61 81
62 82
63 83
64 84
65 85
66 86
67 87
68 88
69 89

List of values

[10, 12, 13, 15, 16, 17, 19, 20, 21, 23, 24, 25, 27, 28, 29, 30, 32, 33, 34, 35, 36, 37, 38, 40, 41, 42, 44, 45, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89]

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

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