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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.

A057024 Largest odd factor of (n-th prime+1); k when n-th prime is written as k*2^m-1 [with k odd].

Table of values

n a(n)
1 3
2 1
3 3
4 1
5 3
6 7
7 9
8 5
9 3
10 15
11 1
12 19
13 21
14 11
15 3
16 27
17 15
18 31
19 17
20 9
21 37
22 5
23 21
24 45
25 49
26 51
27 13
28 27
29 55
30 57
31 1
32 33
33 69
34 35
35 75
36 19
37 79
38 41
39 21
40 87
41 45
42 91
43 3
44 97
45 99
46 25
47 53
48 7
49 57
50 115
51 117
52 15
53 121
54 63
55 129
56 33
57 135
58 17
59 139
60 141
61 71
62 147
63 77
64 39
65 157
66 159
67 83
68 169
69 87

List of values

[3, 1, 3, 1, 3, 7, 9, 5, 3, 15, 1, 19, 21, 11, 3, 27, 15, 31, 17, 9, 37, 5, 21, 45, 49, 51, 13, 27, 55, 57, 1, 33, 69, 35, 75, 19, 79, 41, 21, 87, 45, 91, 3, 97, 99, 25, 53, 7, 57, 115, 117, 15, 121, 63, 129, 33, 135, 17, 139, 141, 71, 147, 77, 39, 157, 159, 83, 169, 87]

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

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