A373043 - cp's OEIS frontend

A373043 a(n) is the number of products P = jkn, 1 < j < k < n, such that P is a square.

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

[0, 0, 1, 0, 2, 1, 2, 0, 4, 0, 2, 3, 3, 0, 10, 0, 8, 3, 3, 0, 11, 9, 3, 17, 10, 0, 10, 0, 25, 5, 4, 6, 18, 0, 4, 5, 19, 0, 12, 0, 12, 25, 4, 0, 34, 29, 48, 6, 15, 0, 43, 9, 25, 7, 5, 0, 31, 0, 5, 32, 45, 10, 16, 0, 16, 7, 20, 0, 74, 0, 6, 68, 18, 11, 18, 0, 55, 65, 6, 0]

cp's OEIS Frontend

A373043 a(n) is the number of products P = jkn, 1 < j < k < n, such that P is a square.

Table of values

List of values

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

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

cp's OEIS Frontend

A373043 a(n) is the number of products P = j*k*n, 1 < j < k < n, such that P is a square.

Table of values

List of values

A373043 a(n) is the number of products P = jkn, 1 < j < k < n, such that P is a square.

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