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.

A082863 Number of distinct prime factors of n^2-1.

Table of values

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

List of values

[1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 2, 3, 3, 2, 3, 2, 2, 3, 3, 3, 3, 3, 2, 3, 2, 3, 2, 4, 2, 3, 3, 2, 4, 3, 3, 3, 3, 3, 3, 4, 2, 4, 3, 3, 3, 3, 2, 3, 3, 3, 3, 3, 3, 3, 4, 3, 3, 4, 2, 4, 3, 2, 4, 3, 3, 4, 3, 4, 3, 4, 2, 3, 3, 3, 4, 4, 3, 4, 2, 3, 2, 4, 3, 4, 4, 3, 3, 4, 3, 4, 4, 3, 4, 3, 3, 3, 3, 3, 3]