A082523 - cp's OEIS frontend

A082523 Number of times k^2 + (n-k)^2 is a square for 1 <= k <= n-1.

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

[0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 2, 0, 0, 2, 0, 0, 0, 2, 0, 2, 0, 0, 0, 0, 2, 0, 0, 2, 0, 0, 2, 2, 0, 0, 0, 0, 0, 2, 2, 0, 0, 0, 2, 2, 0, 4, 0, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 2, 2, 2, 2, 0, 2, 0, 0, 0, 2, 0, 2, 0, 0, 2, 0, 2, 2, 0, 0, 0]

cp's OEIS Frontend

A082523 Number of times k^2 + (n-k)^2 is a square for 1 <= k <= n-1.

Table of values

List of values

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

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

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