A094572 - cp's OEIS frontend

A094572 Number of pairs of integers x, y (of either sign) with x^2 - y^2 = n.

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

[2, 0, 4, 2, 4, 0, 4, 4, 6, 0, 4, 4, 4, 0, 8, 6, 4, 0, 4, 4, 8, 0, 4, 8, 6, 0, 8, 4, 4, 0, 4, 8, 8, 0, 8, 6, 4, 0, 8, 8, 4, 0, 4, 4, 12, 0, 4, 12, 6, 0, 8, 4, 4, 0, 8, 8, 8, 0, 4, 8, 4, 0, 12, 10, 8, 0, 4, 4, 8, 0, 4, 12, 4, 0, 12, 4, 8, 0, 4, 12, 10, 0, 4, 8, 8, 0, 8, 8, 4, 0, 8, 4, 8, 0, 8, 16, 4, 0, 12, 6]

cp's OEIS Frontend

A094572 Number of pairs of integers x, y (of either sign) with x^2 - y^2 = n.

Table of values

List of values

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

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

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