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.

A245570 Rectangular array A read by (upward) antidiagonals: A(n,k) = n/gcd(n,10^k), n,k >= 1.

Table of values

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

List of values

[1, 1, 1, 3, 1, 1, 2, 3, 1, 1, 1, 1, 3, 1, 1, 3, 1, 1, 3, 1, 1, 7, 3, 1, 1, 3, 1, 1, 4, 7, 3, 1, 1, 3, 1, 1, 9, 2, 7, 3, 1, 1, 3, 1, 1, 1, 9, 1, 7, 3, 1, 1, 3, 1, 1, 11, 1, 9, 1, 7, 3, 1, 1, 3, 1, 1, 6, 11, 1, 9, 1, 7, 3, 1, 1, 3, 1, 1, 13, 3, 11, 1, 9, 1, 7, 3, 1, 1, 3, 1, 1]