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.

A080389 Numbers n such that gcd( n+1, binomial(n, floor(n/2)) ) = 1.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 6
6 7
7 8
8 10
9 12
10 15
11 16
12 18
13 20
14 22
15 24
16 26
17 28
18 30
19 31
20 36
21 40
22 42
23 46
24 48
25 52
26 54
27 56
28 58
29 60
30 63
31 64
32 66
33 70
34 72
35 74
36 78
37 80
38 82
39 88
40 96
41 100
42 102
43 106
44 108
45 112
46 114
47 118
48 120
49 124
50 126
51 127
52 130
53 132
54 136
55 138
56 148
57 150
58 156
59 162
60 166
61 168
62 170
63 172
64 178

List of values

[1, 2, 3, 4, 6, 7, 8, 10, 12, 15, 16, 18, 20, 22, 24, 26, 28, 30, 31, 36, 40, 42, 46, 48, 52, 54, 56, 58, 60, 63, 64, 66, 70, 72, 74, 78, 80, 82, 88, 96, 100, 102, 106, 108, 112, 114, 118, 120, 124, 126, 127, 130, 132, 136, 138, 148, 150, 156, 162, 166, 168, 170, 172, 178]

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

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