A280831 - cp's OEIS frontend

A280831 Number of ways to write 8n+7 as x^2 + y^2 + z^2 + w^2 with x^4 + 1680y^3*z a square, where x,y,z,w are positive integers.

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

[1, 1, 1, 2, 1, 3, 2, 1, 2, 1, 1, 1, 4, 2, 1, 4, 5, 3, 3, 1, 3, 2, 3, 2, 6, 5, 3, 4, 4, 3, 12, 6, 2, 7, 5, 3, 10, 4, 5, 2, 7, 5, 4, 5, 3, 8, 2, 2, 3, 4, 6, 7, 8, 1, 5, 2, 6, 9, 6, 5, 9, 9, 4, 6, 1, 4, 14, 5, 4, 12, 3, 11, 12, 1, 4, 8, 6, 7, 4, 6, 7]

cp's OEIS Frontend

A280831 Number of ways to write 8n+7 as x^2 + y^2 + z^2 + w^2 with x^4 + 1680y^3*z a square, where x,y,z,w are positive integers.

Table of values

List of values

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

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

cp's OEIS Frontend

A280831 Number of ways to write 8*n+7 as x^2 + y^2 + z^2 + w^2 with x^4 + 1680*y^3*z a square, where x,y,z,w are positive integers.

Table of values

List of values

A280831 Number of ways to write 8n+7 as x^2 + y^2 + z^2 + w^2 with x^4 + 1680y^3*z a square, where x,y,z,w are positive integers.

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