A217956 - cp's OEIS frontend

A217956 Total number of solutions to the equation x^2+k*y^2 = n with x > 0, y > 0, k >= 0, or 0 if infinite. (Order matters for the equation x^2+y^2 = n).

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

[0, 1, 1, 0, 3, 2, 2, 3, 0, 4, 3, 4, 6, 3, 3, 0, 7, 5, 5, 7, 6, 5, 4, 6, 0, 6, 6, 8, 9, 5, 6, 8, 9, 8, 5, 0, 11, 6, 6, 11, 12, 6, 8, 9, 12, 7, 6, 10, 0, 9, 8, 15, 12, 10, 8, 10, 13, 10, 8, 10, 15, 7, 9, 0, 16, 9, 10, 15, 12, 10, 8, 15, 18, 10, 9, 16, 12, 8, 11, 15, 0, 12, 9, 16, 19, 10, 9, 16, 18, 13, 12, 13, 14, 11, 9, 15, 21, 10, 14, 0]

cp's OEIS Frontend

A217956 Total number of solutions to the equation x^2+k*y^2 = n with x > 0, y > 0, k >= 0, or 0 if infinite. (Order matters for the equation x^2+y^2 = n).

Table of values

List of values

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

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

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