A300139 - cp's OEIS frontend

A300139 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with 4x - 3y a square, where x,y,z,w are nonnegative integers with z <= w such that 10*x or y is a square.

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

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

cp's OEIS Frontend

A300139 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with 4x - 3y a square, where x,y,z,w are nonnegative integers with z <= w such that 10*x or y is a square.

Table of values

List of values

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

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

cp's OEIS Frontend

A300139 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with 4*x - 3*y a square, where x,y,z,w are nonnegative integers with z <= w such that 10*x or y is a square.

Table of values

List of values

A300139 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with 4x - 3y a square, where x,y,z,w are nonnegative integers with z <= w such that 10*x or y is a square.

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