A186230 - cp's OEIS frontend

A186230 Triangle T(n,k), n>=1, 1<=k<=n, read by rows: T(n,k) is the number of positive integers j such that j,k,n are pairwise coprime.

n	a(n)
1	0
2	0
3	0
4	0
5	1
6	0
7	0
8	0
9	1
10	0
11	0
12	1
13	2
14	2
15	0
16	0
17	0
18	0
19	0
20	1
21	0
22	0
23	1
24	2
25	2
26	4
27	2
28	0
29	0
30	0
31	1
32	0
33	2
34	0
35	3
36	0
37	0
38	1
39	0
40	1
41	3
42	0
43	4
44	3
45	0
46	0
47	0
48	1
49	0
50	0
51	0
52	2
53	0
54	2
55	0
56	0
57	1
58	2
59	2
60	4
61	2
62	6
63	4
64	6
65	4
66	0
67	0
68	0
69	0
70	0
71	1
72	0
73	2
74	0
75	0
76	0
77	3
78	0
79	0
80	1
81	2
82	2
83	4
84	2
85	6
86	4
87	6
88	4
89	10
90	4
91	0
92	0
93	0
94	1
95	0
96	2
97	0
98	0
99	0
100	2
101	0
102	4
103	0
104	5
105	0

[0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 2, 2, 0, 0, 0, 0, 0, 1, 0, 0, 1, 2, 2, 4, 2, 0, 0, 0, 1, 0, 2, 0, 3, 0, 0, 1, 0, 1, 3, 0, 4, 3, 0, 0, 0, 1, 0, 0, 0, 2, 0, 2, 0, 0, 1, 2, 2, 4, 2, 6, 4, 6, 4, 0, 0, 0, 0, 0, 1, 0, 2, 0, 0, 0, 3, 0, 0, 1, 2, 2, 4, 2, 6, 4, 6, 4, 10, 4, 0, 0, 0, 1, 0, 2, 0, 0, 0, 2, 0, 4, 0, 5, 0]

cp's OEIS Frontend

A186230 Triangle T(n,k), n>=1, 1<=k<=n, read by rows: T(n,k) is the number of positive integers j such that j,k,n are pairwise coprime.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	1
6	0
7	0
8	0
9	1
10	0
11	0
12	1
13	2
14	2
15	0
16	0
17	0
18	0
19	0
20	1
21	0
22	0
23	1
24	2
25	2
26	4
27	2
28	0
29	0
30	0
31	1
32	0
33	2
34	0
35	3
36	0
37	0
38	1
39	0
40	1
41	3
42	0
43	4
44	3
45	0
46	0
47	0
48	1
49	0
50	0
51	0
52	2
53	0
54	2
55	0
56	0
57	1
58	2
59	2
60	4
61	2
62	6
63	4
64	6
65	4
66	0
67	0
68	0
69	0
70	0
71	1
72	0
73	2
74	0
75	0
76	0
77	3
78	0
79	0
80	1
81	2
82	2
83	4
84	2
85	6
86	4
87	6
88	4
89	10
90	4
91	0
92	0
93	0
94	1
95	0
96	2
97	0
98	0
99	0
100	2
101	0
102	4
103	0
104	5
105	0

n	a(n)
1	0
2	0
3	0
4	0
5	1
6	0
7	0
8	0
9	1
10	0
11	0
12	1
13	2
14	2
15	0
16	0
17	0
18	0
19	0
20	1
21	0
22	0
23	1
24	2
25	2
26	4
27	2
28	0
29	0
30	0
31	1
32	0
33	2
34	0
35	3
36	0
37	0
38	1
39	0
40	1
41	3
42	0
43	4
44	3
45	0
46	0
47	0
48	1
49	0
50	0
51	0
52	2
53	0
54	2
55	0
56	0
57	1
58	2
59	2
60	4
61	2
62	6
63	4
64	6
65	4
66	0
67	0
68	0
69	0
70	0
71	1
72	0
73	2
74	0
75	0
76	0
77	3
78	0
79	0
80	1
81	2
82	2
83	4
84	2
85	6
86	4
87	6
88	4
89	10
90	4
91	0
92	0
93	0
94	1
95	0
96	2
97	0
98	0
99	0
100	2
101	0
102	4
103	0
104	5
105	0

n	a(n)
1	0
2	0
3	0
4	0
5	1
6	0
7	0
8	0
9	1
10	0
11	0
12	1
13	2
14	2
15	0
16	0
17	0
18	0
19	0
20	1
21	0
22	0
23	1
24	2
25	2
26	4
27	2
28	0
29	0
30	0
31	1
32	0
33	2
34	0
35	3
36	0
37	0
38	1
39	0
40	1
41	3
42	0
43	4
44	3
45	0
46	0
47	0
48	1
49	0
50	0
51	0
52	2
53	0
54	2
55	0
56	0
57	1
58	2
59	2
60	4
61	2
62	6
63	4
64	6
65	4
66	0
67	0
68	0
69	0
70	0
71	1
72	0
73	2
74	0
75	0
76	0
77	3
78	0
79	0
80	1
81	2
82	2
83	4
84	2
85	6
86	4
87	6
88	4
89	10
90	4
91	0
92	0
93	0
94	1
95	0
96	2
97	0
98	0
99	0
100	2
101	0
102	4
103	0
104	5
105	0