A273616 - cp's OEIS frontend

A273616 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with (3x^2+13y^2)*z a square, where x,y,z,w are nonnegative integers.

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

[1, 4, 4, 2, 5, 8, 4, 2, 4, 8, 11, 4, 2, 10, 8, 1, 4, 12, 10, 8, 9, 8, 9, 1, 4, 17, 16, 6, 3, 16, 8, 1, 4, 8, 18, 10, 8, 12, 13, 2, 10, 18, 9, 8, 5, 17, 11, 3, 2, 15, 22, 7, 13, 15, 17, 4, 6, 10, 11, 14, 2, 18, 17, 1, 5, 23, 13, 9, 13, 14, 14, 1, 8, 16, 26, 8, 4, 16, 7, 1, 8]

cp's OEIS Frontend

A273616 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with (3x^2+13y^2)*z a square, where x,y,z,w are nonnegative integers.

Table of values

List of values

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

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

cp's OEIS Frontend

A273616 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with (3*x^2+13*y^2)*z a square, where x,y,z,w are nonnegative integers.

Table of values

List of values

A273616 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with (3x^2+13y^2)*z a square, where x,y,z,w are nonnegative integers.

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