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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.

A217128 Numbers n such that (2n)^4 + 1 is not prime.

Table of values

n a(n)
1 4
2 5
3 6
4 7
5 9
6 11
7 13
8 15
9 16
10 18
11 19
12 20
13 21
14 22
15 25
16 26
17 29
18 30
19 31
20 32
21 33
22 34
23 35
24 36
25 38
26 39
27 42
28 43
29 46
30 47
31 48
32 49
33 50
34 51
35 52
36 54
37 55
38 56
39 57
40 58
41 60
42 61
43 62
44 63
45 64
46 65
47 67
48 68
49 69
50 72
51 73
52 74
53 75
54 76
55 78
56 79
57 81
58 83
59 84
60 85
61 86
62 88
63 89
64 91
65 92
66 93
67 94
68 95
69 96
70 98
71 100

List of values

[4, 5, 6, 7, 9, 11, 13, 15, 16, 18, 19, 20, 21, 22, 25, 26, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39, 42, 43, 46, 47, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 61, 62, 63, 64, 65, 67, 68, 69, 72, 73, 74, 75, 76, 78, 79, 81, 83, 84, 85, 86, 88, 89, 91, 92, 93, 94, 95, 96, 98, 100]

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

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