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.

A260933 Lexicographically smallest permutation of the natural numbers, such that a(n)+n and a(n)+n+1 are both composite numbers.

Table of values

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

List of values

[7, 6, 5, 4, 3, 2, 1, 12, 11, 10, 9, 8, 13, 18, 17, 16, 15, 14, 19, 24, 23, 22, 21, 20, 25, 28, 27, 26, 33, 32, 31, 30, 29, 34, 39, 38, 37, 36, 35, 40, 43, 42, 41, 46, 45, 44, 47, 50, 49, 48, 53, 52, 51, 56, 55, 54, 57, 58, 59, 60, 61, 62, 65, 64, 63, 66, 67]

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

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