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.

A204116 Symmetric matrix based on f(i,j) = gcd(2^i-1, 2^j-1), by antidiagonals.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 3
6 1
7 1
8 1
9 1
10 1
11 1
12 3
13 7
14 3
15 1
16 1
17 1
18 1
19 1
20 1
21 1
22 1
23 3
24 1
25 15
26 1
27 3
28 1
29 1
30 1
31 7
32 1
33 1
34 7
35 1
36 1
37 1
38 3
39 1
40 3
41 31
42 3
43 1
44 3
45 1
46 1
47 1
48 1
49 1
50 1
51 1
52 1
53 1
54 1
55 1
56 1
57 3
58 7
59 15
60 1
61 63
62 1
63 15
64 7
65 3
66 1
67 1
68 1
69 1
70 1
71 1
72 1
73 1
74 1
75 1
76 1
77 1
78 1
79 1
80 3
81 1
82 3
83 1
84 3
85 127
86 3
87 1
88 3
89 1
90 3
91 1
92 1
93 1
94 7
95 1

List of values

[1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 15, 1, 3, 1, 1, 1, 7, 1, 1, 7, 1, 1, 1, 3, 1, 3, 31, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 7, 15, 1, 63, 1, 15, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 3, 127, 3, 1, 3, 1, 3, 1, 1, 1, 7, 1]