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.

A088631 Largest number m < n such that m+n is a prime.

Table of values

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

List of values

[1, 2, 3, 2, 5, 6, 5, 8, 9, 8, 11, 10, 9, 14, 15, 14, 13, 18, 17, 20, 21, 20, 23, 22, 21, 26, 25, 24, 29, 30, 29, 28, 33, 32, 35, 36, 35, 34, 39, 38, 41, 40, 39, 44, 43, 42, 41, 48, 47, 50, 51, 50, 53, 54, 53, 56, 55, 54, 53, 52, 51, 50, 63, 62, 65, 64, 63, 68, 69, 68, 67, 66, 65, 74, 75]

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

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