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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.

A326494 Number of subsets of {1..n} containing all differences and quotients of pairs of distinct elements.

Table of values

n a(n)
0 1
1 2
2 4
3 6
4 9
5 11
6 13
7 15
8 17
9 19
10 21
11 23
12 25
13 27
14 29
15 31
16 33
17 35
18 37
19 39
20 41
21 43
22 45
23 47
24 49
25 51
26 53
27 55
28 57
29 59
30 61
31 63
32 65
33 67
34 69
35 71
36 73
37 75
38 77
39 79
40 81
41 83
42 85
43 87
44 89
45 91
46 93
47 95
48 97
49 99
50 101
51 103
52 105
53 107
54 109
55 111
56 113
57 115
58 117
59 119
60 121
61 123
62 125
63 127

List of values

[1, 2, 4, 6, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 115, 117, 119, 121, 123, 125, 127]

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

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