A211510 - cp's OEIS frontend

A211510 Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^2 = x*y - 2n.

n	a(n)
0	0
1	0
2	0
3	0
4	3
5	0
6	1
7	6
8	5
9	4
10	13
11	0
12	16
13	12
14	7
15	8
16	22
17	10
18	27
19	20
20	20
21	8
22	41
23	14
24	27
25	32
26	21
27	36
28	66
29	0
30	28
31	38
32	40
33	36
34	71
35	12
36	53
37	60
38	57
39	16
40	83
41	14
42	80
43	60
44	32
45	64
46	75
47	50
48	98
49	62
50	47
51	16
52	144
53	36
54	100
55	88
56	53
57	52
58	153
59	36
60	94
61	76
62	91
63	98
64	129
65	20
66	92
67	124
68	102

[0, 0, 0, 0, 3, 0, 1, 6, 5, 4, 13, 0, 16, 12, 7, 8, 22, 10, 27, 20, 20, 8, 41, 14, 27, 32, 21, 36, 66, 0, 28, 38, 40, 36, 71, 12, 53, 60, 57, 16, 83, 14, 80, 60, 32, 64, 75, 50, 98, 62, 47, 16, 144, 36, 100, 88, 53, 52, 153, 36, 94, 76, 91, 98, 129, 20, 92, 124, 102]

cp's OEIS Frontend

A211510 Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^2 = x*y - 2n.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	0
4	3
5	0
6	1
7	6
8	5
9	4
10	13
11	0
12	16
13	12
14	7
15	8
16	22
17	10
18	27
19	20
20	20
21	8
22	41
23	14
24	27
25	32
26	21
27	36
28	66
29	0
30	28
31	38
32	40
33	36
34	71
35	12
36	53
37	60
38	57
39	16
40	83
41	14
42	80
43	60
44	32
45	64
46	75
47	50
48	98
49	62
50	47
51	16
52	144
53	36
54	100
55	88
56	53
57	52
58	153
59	36
60	94
61	76
62	91
63	98
64	129
65	20
66	92
67	124
68	102

n	a(n)
0	0
1	0
2	0
3	0
4	3
5	0
6	1
7	6
8	5
9	4
10	13
11	0
12	16
13	12
14	7
15	8
16	22
17	10
18	27
19	20
20	20
21	8
22	41
23	14
24	27
25	32
26	21
27	36
28	66
29	0
30	28
31	38
32	40
33	36
34	71
35	12
36	53
37	60
38	57
39	16
40	83
41	14
42	80
43	60
44	32
45	64
46	75
47	50
48	98
49	62
50	47
51	16
52	144
53	36
54	100
55	88
56	53
57	52
58	153
59	36
60	94
61	76
62	91
63	98
64	129
65	20
66	92
67	124
68	102

n	a(n)
0	0
1	0
2	0
3	0
4	3
5	0
6	1
7	6
8	5
9	4
10	13
11	0
12	16
13	12
14	7
15	8
16	22
17	10
18	27
19	20
20	20
21	8
22	41
23	14
24	27
25	32
26	21
27	36
28	66
29	0
30	28
31	38
32	40
33	36
34	71
35	12
36	53
37	60
38	57
39	16
40	83
41	14
42	80
43	60
44	32
45	64
46	75
47	50
48	98
49	62
50	47
51	16
52	144
53	36
54	100
55	88
56	53
57	52
58	153
59	36
60	94
61	76
62	91
63	98
64	129
65	20
66	92
67	124
68	102