A338162 - cp's OEIS frontend

A338162 Number of ways to write 4n + 1 as x^2 + y^2 + z^2 + w^2 with x^2 + 7y^2 = 2^k for some k = 0,1,2,..., where x, y, z, w are nonnegative integers with z <= w.

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

[1, 2, 3, 2, 4, 4, 2, 3, 6, 3, 7, 6, 5, 6, 7, 3, 8, 9, 5, 6, 8, 4, 8, 7, 4, 8, 11, 3, 7, 8, 6, 8, 13, 6, 6, 8, 6, 9, 11, 8, 10, 12, 7, 7, 12, 5, 14, 14, 7, 7, 13, 5, 13, 13, 5, 8, 13, 8, 10, 10, 7, 13, 10, 6, 9, 14, 9, 10, 15, 7, 10]

cp's OEIS Frontend

A338162 Number of ways to write 4n + 1 as x^2 + y^2 + z^2 + w^2 with x^2 + 7y^2 = 2^k for some k = 0,1,2,..., where x, y, z, w are nonnegative integers with z <= w.

Table of values

List of values

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

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

cp's OEIS Frontend

A338162 Number of ways to write 4*n + 1 as x^2 + y^2 + z^2 + w^2 with x^2 + 7*y^2 = 2^k for some k = 0,1,2,..., where x, y, z, w are nonnegative integers with z <= w.

Table of values

List of values

A338162 Number of ways to write 4n + 1 as x^2 + y^2 + z^2 + w^2 with x^2 + 7y^2 = 2^k for some k = 0,1,2,..., where x, y, z, w are nonnegative integers with z <= w.

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