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.

A080259 Numbers whose squarefree kernel is not a primorial number, i.e., A007947(a(n)) is not in A002110.

Table of values

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

List of values

[3, 5, 7, 9, 10, 11, 13, 14, 15, 17, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 31, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53, 55, 56, 57, 58, 59, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87]

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

Content is available under The OEIS End-User License Agreement.