A065458 - cp's OEIS frontend

A065458 Number of inequivalent (ordered) solutions to a^2 + b^2 + c^2 + d^2 = n^2.

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	3
6	4
7	4
8	2
9	6
10	7
11	6
12	4
13	8
14	10
15	14
16	2
17	11
18	14
19	13
20	7
21	23
22	15
23	17
24	4
25	24
26	21
27	31
28	10
29	25
30	37
31	28
32	2
33	46
34	29
35	49
36	14
37	38
38	35
39	61
40	7
41	45
42	62
43	49
44	15
45	93
46	47
47	57
48	4
49	72
50	67
51	97
52	21
53	71
54	84
55	101
56	10
57	119
58	70
59	86
60	37
61	92
62	79
63	165
64	2
65	138
66	127
67	109
68	29
69	168
70	140
71	121
72	14

[1, 1, 2, 2, 2, 3, 4, 4, 2, 6, 7, 6, 4, 8, 10, 14, 2, 11, 14, 13, 7, 23, 15, 17, 4, 24, 21, 31, 10, 25, 37, 28, 2, 46, 29, 49, 14, 38, 35, 61, 7, 45, 62, 49, 15, 93, 47, 57, 4, 72, 67, 97, 21, 71, 84, 101, 10, 119, 70, 86, 37, 92, 79, 165, 2, 138, 127, 109, 29, 168, 140, 121, 14]

cp's OEIS Frontend

A065458 Number of inequivalent (ordered) solutions to a^2 + b^2 + c^2 + d^2 = n^2.

Table of values

List of values

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	3
6	4
7	4
8	2
9	6
10	7
11	6
12	4
13	8
14	10
15	14
16	2
17	11
18	14
19	13
20	7
21	23
22	15
23	17
24	4
25	24
26	21
27	31
28	10
29	25
30	37
31	28
32	2
33	46
34	29
35	49
36	14
37	38
38	35
39	61
40	7
41	45
42	62
43	49
44	15
45	93
46	47
47	57
48	4
49	72
50	67
51	97
52	21
53	71
54	84
55	101
56	10
57	119
58	70
59	86
60	37
61	92
62	79
63	165
64	2
65	138
66	127
67	109
68	29
69	168
70	140
71	121
72	14

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	3
6	4
7	4
8	2
9	6
10	7
11	6
12	4
13	8
14	10
15	14
16	2
17	11
18	14
19	13
20	7
21	23
22	15
23	17
24	4
25	24
26	21
27	31
28	10
29	25
30	37
31	28
32	2
33	46
34	29
35	49
36	14
37	38
38	35
39	61
40	7
41	45
42	62
43	49
44	15
45	93
46	47
47	57
48	4
49	72
50	67
51	97
52	21
53	71
54	84
55	101
56	10
57	119
58	70
59	86
60	37
61	92
62	79
63	165
64	2
65	138
66	127
67	109
68	29
69	168
70	140
71	121
72	14

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	3
6	4
7	4
8	2
9	6
10	7
11	6
12	4
13	8
14	10
15	14
16	2
17	11
18	14
19	13
20	7
21	23
22	15
23	17
24	4
25	24
26	21
27	31
28	10
29	25
30	37
31	28
32	2
33	46
34	29
35	49
36	14
37	38
38	35
39	61
40	7
41	45
42	62
43	49
44	15
45	93
46	47
47	57
48	4
49	72
50	67
51	97
52	21
53	71
54	84
55	101
56	10
57	119
58	70
59	86
60	37
61	92
62	79
63	165
64	2
65	138
66	127
67	109
68	29
69	168
70	140
71	121
72	14