A272336 - cp's OEIS frontend

A272336 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with x^4 + y^3*z a square, where x,y,z,w are nonnegative integers with z > 0.

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

[1, 3, 2, 1, 4, 5, 1, 3, 5, 5, 5, 3, 4, 7, 3, 1, 10, 10, 4, 5, 8, 5, 1, 5, 6, 12, 7, 1, 10, 7, 1, 3, 11, 8, 6, 6, 4, 11, 2, 5, 15, 11, 4, 5, 12, 6, 2, 3, 8, 15, 8, 4, 13, 16, 2, 7, 11, 6, 10, 4, 11, 13, 4, 1, 15, 20, 5, 10, 15, 9, 1, 10, 10, 18, 11, 4, 15, 9, 1, 5]

cp's OEIS Frontend

A272336 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with x^4 + y^3*z a square, where x,y,z,w are nonnegative integers with z > 0.

Table of values

List of values

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

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

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