A272084 - cp's OEIS frontend

A272084 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with 4x^2 + 5y^2 + 20zw a square, where x,y,z,w are nonnegative integers with z < w.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	1
9	2
10	3
11	3
12	1
13	2
14	1
15	2
16	1
17	3
18	3
19	2
20	2
21	1
22	2
23	3
24	1
25	3
26	4
27	4
28	1
29	4
30	1
31	2
32	1
33	3
34	3
35	3
36	2
37	2
38	1
39	2
40	3
41	5
42	4
43	2
44	3
45	3
46	3
47	2
48	1
49	2
50	6
51	6
52	2
53	3
54	2
55	2
56	1
57	3
58	4
59	4
60	2
61	3
62	1
63	6
64	1
65	5
66	3
67	4
68	3
69	4
70	1
71	4
72	3
73	4
74	8
75	4
76	2
77	1
78	3
79	2
80	2
81	5
82	4
83	4
84	1
85	6
86	3
87	6
88	2
89	5
90	6
91	7
92	3
93	2
94	2
95	2
96	1
97	3
98	5
99	9
100	3

[1, 1, 1, 1, 2, 1, 1, 1, 2, 3, 3, 1, 2, 1, 2, 1, 3, 3, 2, 2, 1, 2, 3, 1, 3, 4, 4, 1, 4, 1, 2, 1, 3, 3, 3, 2, 2, 1, 2, 3, 5, 4, 2, 3, 3, 3, 2, 1, 2, 6, 6, 2, 3, 2, 2, 1, 3, 4, 4, 2, 3, 1, 6, 1, 5, 3, 4, 3, 4, 1, 4, 3, 4, 8, 4, 2, 1, 3, 2, 2, 5, 4, 4, 1, 6, 3, 6, 2, 5, 6, 7, 3, 2, 2, 2, 1, 3, 5, 9, 3]

cp's OEIS Frontend

A272084 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with 4x^2 + 5y^2 + 20zw a square, where x,y,z,w are nonnegative integers with z < w.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	1
9	2
10	3
11	3
12	1
13	2
14	1
15	2
16	1
17	3
18	3
19	2
20	2
21	1
22	2
23	3
24	1
25	3
26	4
27	4
28	1
29	4
30	1
31	2
32	1
33	3
34	3
35	3
36	2
37	2
38	1
39	2
40	3
41	5
42	4
43	2
44	3
45	3
46	3
47	2
48	1
49	2
50	6
51	6
52	2
53	3
54	2
55	2
56	1
57	3
58	4
59	4
60	2
61	3
62	1
63	6
64	1
65	5
66	3
67	4
68	3
69	4
70	1
71	4
72	3
73	4
74	8
75	4
76	2
77	1
78	3
79	2
80	2
81	5
82	4
83	4
84	1
85	6
86	3
87	6
88	2
89	5
90	6
91	7
92	3
93	2
94	2
95	2
96	1
97	3
98	5
99	9
100	3

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	1
9	2
10	3
11	3
12	1
13	2
14	1
15	2
16	1
17	3
18	3
19	2
20	2
21	1
22	2
23	3
24	1
25	3
26	4
27	4
28	1
29	4
30	1
31	2
32	1
33	3
34	3
35	3
36	2
37	2
38	1
39	2
40	3
41	5
42	4
43	2
44	3
45	3
46	3
47	2
48	1
49	2
50	6
51	6
52	2
53	3
54	2
55	2
56	1
57	3
58	4
59	4
60	2
61	3
62	1
63	6
64	1
65	5
66	3
67	4
68	3
69	4
70	1
71	4
72	3
73	4
74	8
75	4
76	2
77	1
78	3
79	2
80	2
81	5
82	4
83	4
84	1
85	6
86	3
87	6
88	2
89	5
90	6
91	7
92	3
93	2
94	2
95	2
96	1
97	3
98	5
99	9
100	3

cp's OEIS Frontend

A272084 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with 4*x^2 + 5*y^2 + 20*z*w a square, where x,y,z,w are nonnegative integers with z < w.

Table of values

List of values

A272084 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with 4x^2 + 5y^2 + 20zw a square, where x,y,z,w are nonnegative integers with z < w.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	1
9	2
10	3
11	3
12	1
13	2
14	1
15	2
16	1
17	3
18	3
19	2
20	2
21	1
22	2
23	3
24	1
25	3
26	4
27	4
28	1
29	4
30	1
31	2
32	1
33	3
34	3
35	3
36	2
37	2
38	1
39	2
40	3
41	5
42	4
43	2
44	3
45	3
46	3
47	2
48	1
49	2
50	6
51	6
52	2
53	3
54	2
55	2
56	1
57	3
58	4
59	4
60	2
61	3
62	1
63	6
64	1
65	5
66	3
67	4
68	3
69	4
70	1
71	4
72	3
73	4
74	8
75	4
76	2
77	1
78	3
79	2
80	2
81	5
82	4
83	4
84	1
85	6
86	3
87	6
88	2
89	5
90	6
91	7
92	3
93	2
94	2
95	2
96	1
97	3
98	5
99	9
100	3