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.

A268082 Numbers n such that gcd(binomial(2*n-1,n), n) is equal to 1.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 7
7 8
8 9
9 11
10 13
11 16
12 17
13 19
14 23
15 25
16 27
17 29
18 31
19 32
20 37
21 39
22 41
23 43
24 47
25 49
26 53
27 55
28 59
29 61
30 64
31 67
32 71
33 73
34 79
35 81
36 83
37 89
38 93
39 97
40 101
41 103
42 107
43 109
44 111
45 113
46 119
47 121
48 125
49 127
50 128
51 131
52 137
53 139
54 149
55 151
56 155
57 157
58 161
59 163
60 167
61 169
62 173
63 179

List of values

[1, 2, 3, 4, 5, 7, 8, 9, 11, 13, 16, 17, 19, 23, 25, 27, 29, 31, 32, 37, 39, 41, 43, 47, 49, 53, 55, 59, 61, 64, 67, 71, 73, 79, 81, 83, 89, 93, 97, 101, 103, 107, 109, 111, 113, 119, 121, 125, 127, 128, 131, 137, 139, 149, 151, 155, 157, 161, 163, 167, 169, 173, 179]

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

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