A294508 - cp's OEIS frontend

A294508 Regular triangular array read by rows: T(n,m) = pi(nm) - pi(n)pi(m) for n > 0 and 0 < m <= n.

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

[0, 1, 1, 2, 1, 0, 2, 2, 1, 2, 3, 1, 0, 2, 0, 3, 2, 1, 3, 1, 2, 4, 2, 0, 1, -1, 1, -1, 4, 2, 1, 3, 0, 3, 0, 2, 4, 3, 1, 3, 2, 4, 2, 4, 6, 4, 4, 2, 4, 3, 5, 3, 6, 8, 9, 5, 3, 1, 4, 1, 3, 1, 3, 5, 9, 5, 5, 4, 1, 5, 2, 5, 3, 4, 8, 10, 7, 9, 6, 3, 0, 3, 0, 3, 0, 3, 6, 7, 4, 6, 3, 6, 3, 1, 4, 1, 5, 1, 5, 6, 10, 6, 9, 6, 8]

cp's OEIS Frontend

A294508 Regular triangular array read by rows: T(n,m) = pi(nm) - pi(n)pi(m) for n > 0 and 0 < m <= n.

Table of values

List of values

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

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

cp's OEIS Frontend

A294508 Regular triangular array read by rows: T(n,m) = pi(n*m) - pi(n)*pi(m) for n > 0 and 0 < m <= n.

Table of values

List of values

A294508 Regular triangular array read by rows: T(n,m) = pi(nm) - pi(n)pi(m) for n > 0 and 0 < m <= n.

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