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.

A076565 Greatest prime divisor of 2n+1 (sum of two successive integers).

Table of values

n a(n)
1 3
2 5
3 7
4 3
5 11
6 13
7 5
8 17
9 19
10 7
11 23
12 5
13 3
14 29
15 31
16 11
17 7
18 37
19 13
20 41
21 43
22 5
23 47
24 7
25 17
26 53
27 11
28 19
29 59
30 61
31 7
32 13
33 67
34 23
35 71
36 73
37 5
38 11
39 79
40 3
41 83
42 17
43 29
44 89
45 13
46 31
47 19
48 97
49 11
50 101
51 103
52 7
53 107
54 109
55 37
56 113
57 23
58 13
59 17
60 11
61 41
62 5
63 127
64 43
65 131
66 19
67 5
68 137
69 139
70 47
71 13

List of values

[3, 5, 7, 3, 11, 13, 5, 17, 19, 7, 23, 5, 3, 29, 31, 11, 7, 37, 13, 41, 43, 5, 47, 7, 17, 53, 11, 19, 59, 61, 7, 13, 67, 23, 71, 73, 5, 11, 79, 3, 83, 17, 29, 89, 13, 31, 19, 97, 11, 101, 103, 7, 107, 109, 37, 113, 23, 13, 17, 11, 41, 5, 127, 43, 131, 19, 5, 137, 139, 47, 13]

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

Content is available under The OEIS End-User License Agreement.