A273278 - cp's OEIS frontend

A273278 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with x,y,z,w nonnegative integers such that x^2y^2 + 3y^2z^2 + 2z^2*w^2 is a square.

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

[1, 4, 4, 2, 4, 8, 4, 1, 4, 8, 8, 4, 2, 9, 6, 3, 4, 12, 9, 6, 8, 8, 5, 2, 4, 14, 15, 6, 1, 14, 9, 2, 4, 9, 12, 8, 8, 9, 11, 1, 8, 18, 7, 4, 4, 17, 8, 3, 2, 12, 18, 9, 9, 17, 15, 4, 6, 8, 8, 10, 3, 15, 13, 5, 4, 22, 15, 6, 12, 15, 13]

cp's OEIS Frontend

A273278 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with x,y,z,w nonnegative integers such that x^2y^2 + 3y^2z^2 + 2z^2*w^2 is a square.

Table of values

List of values

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

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

cp's OEIS Frontend

A273278 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with x,y,z,w nonnegative integers such that x^2*y^2 + 3*y^2*z^2 + 2*z^2*w^2 is a square.

Table of values

List of values

A273278 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with x,y,z,w nonnegative integers such that x^2y^2 + 3y^2z^2 + 2z^2*w^2 is a square.

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