A282013 - cp's OEIS frontend

A282013 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x,y,z,w nonnegative integers such that both x and 49x + 48(y-z) are squares.

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

[1, 2, 3, 3, 2, 1, 3, 2, 1, 4, 4, 2, 2, 2, 1, 2, 2, 4, 8, 4, 3, 2, 3, 2, 3, 5, 5, 7, 3, 2, 5, 1, 3, 7, 6, 5, 5, 3, 5, 3, 2, 3, 9, 5, 2, 6, 3, 1, 3, 5, 5, 10, 6, 2, 8, 4, 3, 5, 6, 3, 3, 3, 4, 4, 2, 5, 9, 8, 5, 4, 6, 1, 5, 6, 5, 9, 2, 3, 7, 1, 1]

cp's OEIS Frontend

A282013 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x,y,z,w nonnegative integers such that both x and 49x + 48(y-z) are squares.

Table of values

List of values

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

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

cp's OEIS Frontend

A282013 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x,y,z,w nonnegative integers such that both x and 49*x + 48*(y-z) are squares.

Table of values

List of values

A282013 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x,y,z,w nonnegative integers such that both x and 49x + 48(y-z) are squares.

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