A282091 - cp's OEIS frontend

A282091 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x + y - z a cube of an integer, where x,y,z,w are nonnegative integers with x >= y <= z and x == y (mod 2).

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

[1, 2, 1, 1, 2, 2, 2, 2, 1, 3, 2, 1, 3, 1, 2, 2, 1, 4, 1, 2, 2, 2, 2, 1, 2, 3, 4, 2, 3, 2, 2, 1, 1, 5, 2, 3, 4, 2, 1, 2, 1, 4, 5, 1, 4, 2, 1, 2, 1, 5, 3, 3, 3, 1, 3, 4, 1, 4, 2, 1, 5, 3, 4, 2, 3, 5, 3, 3, 6, 3, 5, 3, 4, 6, 1, 3, 5, 3, 2, 3, 2]

cp's OEIS Frontend

A282091 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x + y - z a cube of an integer, where x,y,z,w are nonnegative integers with x >= y <= z and x == y (mod 2).

Table of values

List of values

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

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

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