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.

A085240 As exponents > 0 in powers of 2 or 3 (A006899) occur in A085238 exactly twice, a self-inverse permutation of natural numbers is induced.

Table of values

n a(n)
1 2
2 1
3 5
4 7
5 3
6 10
7 4
8 12
9 15
10 6
11 18
12 8
13 20
14 23
15 9
16 25
17 28
18 11
19 31
20 13
21 33
22 36
23 14
24 38
25 16
26 41
27 43
28 17
29 46
30 49
31 19
32 51
33 21
34 54
35 56
36 22
37 59
38 24
39 62
40 64
41 26
42 67
43 27
44 69
45 72
46 29
47 74
48 77
49 30
50 80
51 32
52 82
53 85
54 34
55 87
56 35
57 90
58 93
59 37
60 95
61 98
62 39
63 100
64 40
65 103
66 105
67 42
68 108

List of values

[2, 1, 5, 7, 3, 10, 4, 12, 15, 6, 18, 8, 20, 23, 9, 25, 28, 11, 31, 13, 33, 36, 14, 38, 16, 41, 43, 17, 46, 49, 19, 51, 21, 54, 56, 22, 59, 24, 62, 64, 26, 67, 27, 69, 72, 29, 74, 77, 30, 80, 32, 82, 85, 34, 87, 35, 90, 93, 37, 95, 98, 39, 100, 40, 103, 105, 42, 108]

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

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