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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.

A131903 Integers x such that d(k)=d(x) for some 0 where d=A000005 is the number of divisors.

Table of values

n a(n)
1 3
2 5
3 7
4 8
5 9
6 10
7 11
8 13
9 14
10 15
11 17
12 18
13 19
14 20
15 21
16 22
17 23
18 25
19 26
20 27
21 28
22 29
23 30
24 31
25 32
26 33
27 34
28 35
29 37
30 38
31 39
32 40
33 41
34 42
35 43
36 44
37 45
38 46
39 47
40 49
41 50
42 51
43 52
44 53
45 54
46 55
47 56
48 57
49 58
50 59
51 61
52 62
53 63
54 65
55 66
56 67
57 68
58 69
59 70
60 71
61 72
62 73
63 74
64 75
65 76
66 77
67 78

List of values

[3, 5, 7, 8, 9, 10, 11, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78]

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

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