A218799 - cp's OEIS frontend

A218799 Number of solutions to x^2 + 2y^2 = n^2.

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

[1, 1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 2, 2, 1, 1, 2, 1, 2, 3, 2, 1, 2, 2, 1, 2, 1, 1, 4, 1, 1, 2, 1, 1, 5, 2, 1, 3, 1, 2, 2, 1, 2, 2, 2, 2, 3, 1, 1, 2, 1, 1, 5, 1, 1, 4, 2, 1, 5, 1, 2, 2, 1, 1, 3, 1, 1, 5, 2, 2, 2, 1, 1, 3, 2, 1, 2, 2, 2, 2, 1, 1, 5, 2, 2, 2, 2, 2, 2]

cp's OEIS Frontend

A218799 Number of solutions to x^2 + 2y^2 = n^2.

Table of values

List of values

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

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

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