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.

A087966 a(n) = gcd(-1 + 2^n, n^2).

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 1
6 9
7 1
8 1
9 1
10 1
11 1
12 9
13 1
14 1
15 1
16 1
17 1
18 27
19 1
20 25
21 49
22 1
23 1
24 9
25 1
26 1
27 1
28 1
29 1
30 9
31 1
32 1
33 1
34 1
35 1
36 27
37 1
38 1
39 1
40 25
41 1
42 441
43 1
44 1
45 1
46 1
47 1
48 9
49 1
50 1
51 1
52 1
53 1
54 81
55 1
56 1
57 1
58 1
59 1
60 225
61 1
62 1
63 49
64 1
65 1
66 9
67 1
68 1
69 1
70 1
71 1
72 27
73 1
74 1
75 1
76 1
77 1
78 9
79 1
80 25
81 1
82 1
83 1
84 441
85 1
86 1
87 1
88 1
89 1
90 27
91 1
92 1
93 1
94 1
95 1
96 9
97 1
98 1

List of values

[1, 1, 1, 1, 1, 9, 1, 1, 1, 1, 1, 9, 1, 1, 1, 1, 1, 27, 1, 25, 49, 1, 1, 9, 1, 1, 1, 1, 1, 9, 1, 1, 1, 1, 1, 27, 1, 1, 1, 25, 1, 441, 1, 1, 1, 1, 1, 9, 1, 1, 1, 1, 1, 81, 1, 1, 1, 1, 1, 225, 1, 1, 49, 1, 1, 9, 1, 1, 1, 1, 1, 27, 1, 1, 1, 1, 1, 9, 1, 25, 1, 1, 1, 441, 1, 1, 1, 1, 1, 27, 1, 1, 1, 1, 1, 9, 1, 1]