A120870 - cp's OEIS frontend

A120870 a(n) is the number k for which there exists a unique pair (j,k) of positive integers such that (j + k + 1)^2 - 4k = 13n^2.

n	a(n)
1	3
2	3
3	1
4	12
5	9
6	4
7	23
8	17
9	9
10	36
11	27
12	16
13	3
14	39
15	25
16	9
17	53
18	36
19	17
20	69
21	49
22	27
23	3
24	64
25	39
26	12
27	81
28	53
29	23
30	100
31	69
32	36
33	1
34	87
35	51
36	13
37	107
38	68
39	27
40	129
41	87
42	43
43	153
44	108
45	61
46	12
47	131
48	81
49	29
50	156
51	103
52	48
53	183
54	127
55	69
56	9
57	153
58	92
59	29
60	181
61	117
62	51
63	211
64	144
65	75
66	4
67	173
68	101

[3, 3, 1, 12, 9, 4, 23, 17, 9, 36, 27, 16, 3, 39, 25, 9, 53, 36, 17, 69, 49, 27, 3, 64, 39, 12, 81, 53, 23, 100, 69, 36, 1, 87, 51, 13, 107, 68, 27, 129, 87, 43, 153, 108, 61, 12, 131, 81, 29, 156, 103, 48, 183, 127, 69, 9, 153, 92, 29, 181, 117, 51, 211, 144, 75, 4, 173, 101]

cp's OEIS Frontend

A120870 a(n) is the number k for which there exists a unique pair (j,k) of positive integers such that (j + k + 1)^2 - 4k = 13n^2.

Table of values

List of values

n	a(n)
1	3
2	3
3	1
4	12
5	9
6	4
7	23
8	17
9	9
10	36
11	27
12	16
13	3
14	39
15	25
16	9
17	53
18	36
19	17
20	69
21	49
22	27
23	3
24	64
25	39
26	12
27	81
28	53
29	23
30	100
31	69
32	36
33	1
34	87
35	51
36	13
37	107
38	68
39	27
40	129
41	87
42	43
43	153
44	108
45	61
46	12
47	131
48	81
49	29
50	156
51	103
52	48
53	183
54	127
55	69
56	9
57	153
58	92
59	29
60	181
61	117
62	51
63	211
64	144
65	75
66	4
67	173
68	101

n	a(n)
1	3
2	3
3	1
4	12
5	9
6	4
7	23
8	17
9	9
10	36
11	27
12	16
13	3
14	39
15	25
16	9
17	53
18	36
19	17
20	69
21	49
22	27
23	3
24	64
25	39
26	12
27	81
28	53
29	23
30	100
31	69
32	36
33	1
34	87
35	51
36	13
37	107
38	68
39	27
40	129
41	87
42	43
43	153
44	108
45	61
46	12
47	131
48	81
49	29
50	156
51	103
52	48
53	183
54	127
55	69
56	9
57	153
58	92
59	29
60	181
61	117
62	51
63	211
64	144
65	75
66	4
67	173
68	101

cp's OEIS Frontend

A120870 a(n) is the number k for which there exists a unique pair (j,k) of positive integers such that (j + k + 1)^2 - 4*k = 13*n^2.

Table of values

List of values

A120870 a(n) is the number k for which there exists a unique pair (j,k) of positive integers such that (j + k + 1)^2 - 4k = 13n^2.

n	a(n)
1	3
2	3
3	1
4	12
5	9
6	4
7	23
8	17
9	9
10	36
11	27
12	16
13	3
14	39
15	25
16	9
17	53
18	36
19	17
20	69
21	49
22	27
23	3
24	64
25	39
26	12
27	81
28	53
29	23
30	100
31	69
32	36
33	1
34	87
35	51
36	13
37	107
38	68
39	27
40	129
41	87
42	43
43	153
44	108
45	61
46	12
47	131
48	81
49	29
50	156
51	103
52	48
53	183
54	127
55	69
56	9
57	153
58	92
59	29
60	181
61	117
62	51
63	211
64	144
65	75
66	4
67	173
68	101