A373042 - cp's OEIS frontend

A373042 a(n) is the number of 3-element subsets {x,y,z} of {1,...,n} such that xyz is a square.

n	a(n)
3	0
4	0
5	0
6	1
7	1
8	4
9	6
10	8
11	8
12	13
13	13
14	15
15	18
16	23
17	23
18	35
19	35
20	44
21	47
22	50
23	50
24	62
25	74
26	77
27	96
28	107
29	107
30	117
31	117
32	145
33	150
34	154
35	160
36	182
37	182
38	186
39	191
40	211
41	211
42	223
43	223
44	236
45	263
46	267
47	267
48	304
49	338
50	390
51	396
52	412
53	412
54	457
55	466
56	492
57	499
58	504
59	504
60	536
61	536
62	541
63	575

[0, 0, 0, 1, 1, 4, 6, 8, 8, 13, 13, 15, 18, 23, 23, 35, 35, 44, 47, 50, 50, 62, 74, 77, 96, 107, 107, 117, 117, 145, 150, 154, 160, 182, 182, 186, 191, 211, 211, 223, 223, 236, 263, 267, 267, 304, 338, 390, 396, 412, 412, 457, 466, 492, 499, 504, 504, 536, 536, 541, 575]

cp's OEIS Frontend

A373042 a(n) is the number of 3-element subsets {x,y,z} of {1,...,n} such that xyz is a square.

Table of values

List of values

n	a(n)
3	0
4	0
5	0
6	1
7	1
8	4
9	6
10	8
11	8
12	13
13	13
14	15
15	18
16	23
17	23
18	35
19	35
20	44
21	47
22	50
23	50
24	62
25	74
26	77
27	96
28	107
29	107
30	117
31	117
32	145
33	150
34	154
35	160
36	182
37	182
38	186
39	191
40	211
41	211
42	223
43	223
44	236
45	263
46	267
47	267
48	304
49	338
50	390
51	396
52	412
53	412
54	457
55	466
56	492
57	499
58	504
59	504
60	536
61	536
62	541
63	575

n	a(n)
3	0
4	0
5	0
6	1
7	1
8	4
9	6
10	8
11	8
12	13
13	13
14	15
15	18
16	23
17	23
18	35
19	35
20	44
21	47
22	50
23	50
24	62
25	74
26	77
27	96
28	107
29	107
30	117
31	117
32	145
33	150
34	154
35	160
36	182
37	182
38	186
39	191
40	211
41	211
42	223
43	223
44	236
45	263
46	267
47	267
48	304
49	338
50	390
51	396
52	412
53	412
54	457
55	466
56	492
57	499
58	504
59	504
60	536
61	536
62	541
63	575

cp's OEIS Frontend

A373042 a(n) is the number of 3-element subsets {x,y,z} of {1,...,n} such that x*y*z is a square.

Table of values

List of values

A373042 a(n) is the number of 3-element subsets {x,y,z} of {1,...,n} such that xyz is a square.

n	a(n)
3	0
4	0
5	0
6	1
7	1
8	4
9	6
10	8
11	8
12	13
13	13
14	15
15	18
16	23
17	23
18	35
19	35
20	44
21	47
22	50
23	50
24	62
25	74
26	77
27	96
28	107
29	107
30	117
31	117
32	145
33	150
34	154
35	160
36	182
37	182
38	186
39	191
40	211
41	211
42	223
43	223
44	236
45	263
46	267
47	267
48	304
49	338
50	390
51	396
52	412
53	412
54	457
55	466
56	492
57	499
58	504
59	504
60	536
61	536
62	541
63	575