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.

A127597 Least number k such that k 4^n + (4^n-1)/3 is prime.

Table of values

n a(n)
0 2
1 1
2 0
3 2
4 3
5 2
6 4
7 4
8 3
9 10
10 3
11 3
12 2
13 7
14 2
15 25
16 6
17 17
18 4
19 13
20 3
21 20
22 36
23 20
24 11
25 27
26 66
27 23
28 39
29 24
30 19
31 13
32 3
33 10
34 6
35 122
36 71
37 58
38 24
39 13
40 3
41 2
42 41
43 10
44 6
45 32
46 58
47 17
48 4
49 79
50 26
51 55
52 36
53 48
54 31
55 28
56 9
57 2
58 76
59 24
60 32
61 28
62 63
63 20
64 37
65 9
66 2
67 7
68 39
69 10
70 91
71 47

List of values

[2, 1, 0, 2, 3, 2, 4, 4, 3, 10, 3, 3, 2, 7, 2, 25, 6, 17, 4, 13, 3, 20, 36, 20, 11, 27, 66, 23, 39, 24, 19, 13, 3, 10, 6, 122, 71, 58, 24, 13, 3, 2, 41, 10, 6, 32, 58, 17, 4, 79, 26, 55, 36, 48, 31, 28, 9, 2, 76, 24, 32, 28, 63, 20, 37, 9, 2, 7, 39, 10, 91, 47]

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

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