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.

A198066 Square array read by antidiagonals, n>=1, k>=1; T(n,k) is the number of primes which are prime to n and are not strong divisors of k.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 0
6 0
7 1
8 0
9 0
10 0
11 2
12 1
13 1
14 0
15 0
16 1
17 1
18 0
19 0
20 0
21 0
22 3
23 1
24 1
25 1
26 1
27 0
28 0
29 3
30 2
31 1
32 1
33 1
34 0
35 0
36 0
37 3
38 3
39 2
40 1
41 2
42 0
43 1
44 0
45 0
46 2
47 2
48 2
49 2
50 0
51 0
52 1
53 0
54 0
55 0
56 4
57 2
58 3
59 3
60 2
61 1
62 2
63 1
64 1
65 0
66 0
67 3
68 3
69 1
70 2
71 2
72 1
73 1
74 1
75 0
76 0
77 0
78 0
79 5
80 3
81 3
82 2
83 2
84 2
85 3
86 1
87 1
88 1
89 1
90 0
91 0

List of values

[0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 2, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 3, 1, 1, 1, 1, 0, 0, 3, 2, 1, 1, 1, 0, 0, 0, 3, 3, 2, 1, 2, 0, 1, 0, 0, 2, 2, 2, 2, 0, 0, 1, 0, 0, 0, 4, 2, 3, 3, 2, 1, 2, 1, 1, 0, 0, 3, 3, 1, 2, 2, 1, 1, 1, 0, 0, 0, 0, 5, 3, 3, 2, 2, 2, 3, 1, 1, 1, 1, 0, 0]