A301304 - cp's OEIS frontend

A301304 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x >= y >= 0 <= z <= w such that x^2 + 7y^2 = 2^km for some k = 0,1,2 and m = 1,2,3,....

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

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

cp's OEIS Frontend

A301304 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x >= y >= 0 <= z <= w such that x^2 + 7y^2 = 2^km for some k = 0,1,2 and m = 1,2,3,....

Table of values

List of values

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

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

cp's OEIS Frontend

A301304 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x >= y >= 0 <= z <= w such that x^2 + 7*y^2 = 2^k*m for some k = 0,1,2 and m = 1,2,3,....

Table of values

List of values

A301304 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x >= y >= 0 <= z <= w such that x^2 + 7y^2 = 2^km for some k = 0,1,2 and m = 1,2,3,....

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