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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.

A081761 Least number >n having same type of prime factorization, a(1)=1.

Table of values

n a(n)
1 1
2 3
3 5
4 9
5 7
6 10
7 11
8 27
9 25
10 14
11 13
12 18
13 17
14 15
15 21
16 81
17 19
18 20
19 23
20 28
21 22
22 26
23 29
24 40
25 49
26 33
27 125
28 44
29 31
30 42
31 37
32 243
33 34
34 35
35 38
36 100
37 41
38 39
39 46
40 54
41 43
42 66
43 47
44 45
45 50
46 51
47 53
48 80
49 121
50 52
51 55
52 63
53 59
54 56
55 57
56 88
57 58
58 62
59 61
60 84
61 67
62 65
63 68
64 729
65 69
66 70
67 71
68 75
69 74
70 78

List of values

[1, 3, 5, 9, 7, 10, 11, 27, 25, 14, 13, 18, 17, 15, 21, 81, 19, 20, 23, 28, 22, 26, 29, 40, 49, 33, 125, 44, 31, 42, 37, 243, 34, 35, 38, 100, 41, 39, 46, 54, 43, 66, 47, 45, 50, 51, 53, 80, 121, 52, 55, 63, 59, 56, 57, 88, 58, 62, 61, 84, 67, 65, 68, 729, 69, 70, 71, 75, 74, 78]

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

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