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.

A295782 Square array A(n,k), n >= 1, k >= 1, read by antidiagonals, where A(n,k) is the number of coprime pairs (a,b) with -n <= a <= n, -k <= b <= k.

Table of values

n a(n)
1 8
2 12
3 12
4 16
5 16
6 16
7 20
8 24
9 24
10 20
11 24
12 28
13 32
14 28
15 24
16 28
17 36
18 40
19 40
20 36
21 28
22 32
23 40
24 52
25 48
26 52
27 40
28 32
29 36
30 48
31 56
32 64
33 64
34 56
35 48
36 36
37 40
38 52
39 68
40 68
41 80
42 68
43 68
44 52
45 40
46 44
47 60
48 76
49 84
50 88
51 88
52 84
53 76
54 60
55 44
56 48
57 64
58 84
59 92
60 108
61 96
62 108
63 92
64 84
65 64
66 48

List of values

[8, 12, 12, 16, 16, 16, 20, 24, 24, 20, 24, 28, 32, 28, 24, 28, 36, 40, 40, 36, 28, 32, 40, 52, 48, 52, 40, 32, 36, 48, 56, 64, 64, 56, 48, 36, 40, 52, 68, 68, 80, 68, 68, 52, 40, 44, 60, 76, 84, 88, 88, 84, 76, 60, 44, 48, 64, 84, 92, 108, 96, 108, 92, 84, 64, 48]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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