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.

A046799 Number of distinct prime factors of 2^n+1.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 2
6 2
7 2
8 1
9 2
10 2
11 2
12 2
13 2
14 3
15 3
16 1
17 2
18 4
19 2
20 2
21 3
22 3
23 2
24 3
25 4
26 4
27 3
28 2
29 3
30 5
31 2
32 2
33 4
34 4
35 5
36 4
37 3
38 4
39 3
40 2
41 3
42 6
43 2
44 3
45 5
46 5
47 3
48 3
49 3
50 5
51 5
52 3
53 3
54 6
55 5
56 3
57 4
58 3
59 4
60 4
61 2
62 5
63 5
64 2
65 6
66 6
67 3
68 3
69 4
70 6
71 3
72 5
73 3
74 5
75 6
76 4
77 6
78 9
79 2
80 3
81 6
82 5
83 6
84 5
85 4
86 5
87 4
88 4
89 4
90 10
91 6
92 2
93 4
94 4
95 5
96 3
97 5
98 6
99 7
100 6
101 2
102 9
103 3
104 2

List of values

[1, 1, 1, 1, 1, 2, 2, 2, 1, 2, 2, 2, 2, 2, 3, 3, 1, 2, 4, 2, 2, 3, 3, 2, 3, 4, 4, 3, 2, 3, 5, 2, 2, 4, 4, 5, 4, 3, 4, 3, 2, 3, 6, 2, 3, 5, 5, 3, 3, 3, 5, 5, 3, 3, 6, 5, 3, 4, 3, 4, 4, 2, 5, 5, 2, 6, 6, 3, 3, 4, 6, 3, 5, 3, 5, 6, 4, 6, 9, 2, 3, 6, 5, 6, 5, 4, 5, 4, 4, 4, 10, 6, 2, 4, 4, 5, 3, 5, 6, 7, 6, 2, 9, 3, 2]