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.

A287218 a(n) = smallest k such that (6*k-3)*2^prime(n) - 1 is prime.

Table of values

n a(n)
1 1
2 1
3 3
4 1
5 1
6 2
7 3
8 9
9 12
10 8
11 3
12 4
13 3
14 1
15 36
16 25
17 8
18 12
19 19
20 21
21 3
22 12
23 19
24 40
25 9
26 14
27 1
28 14
29 2
30 18
31 81
32 56
33 49
34 38
35 38
36 26
37 3
38 33
39 103
40 12
41 67
42 12
43 11
44 8
45 48
46 79
47 2
48 43
49 136
50 82
51 12
52 46
53 78
54 31
55 117
56 126
57 34
58 4
59 27
60 49
61 83
62 3
63 57
64 234
65 12
66 10
67 116
68 128
69 53
70 13

List of values

[1, 1, 3, 1, 1, 2, 3, 9, 12, 8, 3, 4, 3, 1, 36, 25, 8, 12, 19, 21, 3, 12, 19, 40, 9, 14, 1, 14, 2, 18, 81, 56, 49, 38, 38, 26, 3, 33, 103, 12, 67, 12, 11, 8, 48, 79, 2, 43, 136, 82, 12, 46, 78, 31, 117, 126, 34, 4, 27, 49, 83, 3, 57, 234, 12, 10, 116, 128, 53, 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.