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.

A213982 Least k >= 1 such that prime(n) +- k = 2^m * q, m >= 0, where q >= 2 is prime.

Table of values

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

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 1, 2, 1, 2, 2, 3, 1, 1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 1, 3, 1, 2, 1, 1, 1, 3]