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.

A134427 Numbers k such that k^2 + 1 is a composite squarefree number.

Table of values

n a(n)
1 3
2 5
3 8
4 9
5 11
6 12
7 13
8 15
9 17
10 19
11 21
12 22
13 23
14 25
15 27
16 28
17 29
18 30
19 31
20 33
21 34
22 35
23 37
24 39
25 42
26 44
27 45
28 46
29 47
30 48
31 49
32 50
33 51
34 52
35 53
36 55
37 58
38 59
39 60
40 61
41 62
42 63
43 64
44 65
45 67
46 69
47 71
48 72
49 73
50 75
51 76
52 77
53 78
54 79
55 80
56 81
57 83
58 85
59 86
60 87
61 88
62 89
63 91
64 92
65 95
66 96
67 97
68 98
69 100
70 101

List of values

[3, 5, 8, 9, 11, 12, 13, 15, 17, 19, 21, 22, 23, 25, 27, 28, 29, 30, 31, 33, 34, 35, 37, 39, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 55, 58, 59, 60, 61, 62, 63, 64, 65, 67, 69, 71, 72, 73, 75, 76, 77, 78, 79, 80, 81, 83, 85, 86, 87, 88, 89, 91, 92, 95, 96, 97, 98, 100, 101]

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

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