A338094 - cp's OEIS frontend

A338094 Number of ways to write 2*n + 1 as x^2 + y^2 + z^2 + w^2 with x + y a positive power of two, where x, y, z, w are nonnegative integers with x <= y and z <= w.

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	2
7	2
8	3
9	2
10	3
11	1
12	2
13	3
14	3
15	1
16	5
17	3
18	2
19	3
20	5
21	2
22	5
23	3
24	4
25	4
26	4
27	3
28	6
29	4
30	3
31	4
32	5
33	3
34	7
35	2
36	4
37	6
38	5
39	2
40	6
41	3
42	3
43	4
44	7
45	3
46	6
47	4
48	4
49	5
50	5
51	2
52	7
53	2
54	2
55	3
56	5
57	4
58	6
59	4
60	4
61	4
62	6
63	3
64	9
65	4
66	5
67	6
68	5
69	3
70	7
71	2
72	5
73	7
74	7
75	4
76	10
77	7
78	6
79	7
80	9
81	3
82	8
83	3
84	4
85	7
86	7
87	5
88	10
89	6
90	5
91	6
92	10
93	6
94	11
95	5
96	5
97	9
98	5
99	3
100	12

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

cp's OEIS Frontend

A338094 Number of ways to write 2*n + 1 as x^2 + y^2 + z^2 + w^2 with x + y a positive power of two, where x, y, z, w are nonnegative integers with x <= y and z <= w.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	2
7	2
8	3
9	2
10	3
11	1
12	2
13	3
14	3
15	1
16	5
17	3
18	2
19	3
20	5
21	2
22	5
23	3
24	4
25	4
26	4
27	3
28	6
29	4
30	3
31	4
32	5
33	3
34	7
35	2
36	4
37	6
38	5
39	2
40	6
41	3
42	3
43	4
44	7
45	3
46	6
47	4
48	4
49	5
50	5
51	2
52	7
53	2
54	2
55	3
56	5
57	4
58	6
59	4
60	4
61	4
62	6
63	3
64	9
65	4
66	5
67	6
68	5
69	3
70	7
71	2
72	5
73	7
74	7
75	4
76	10
77	7
78	6
79	7
80	9
81	3
82	8
83	3
84	4
85	7
86	7
87	5
88	10
89	6
90	5
91	6
92	10
93	6
94	11
95	5
96	5
97	9
98	5
99	3
100	12

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	2
7	2
8	3
9	2
10	3
11	1
12	2
13	3
14	3
15	1
16	5
17	3
18	2
19	3
20	5
21	2
22	5
23	3
24	4
25	4
26	4
27	3
28	6
29	4
30	3
31	4
32	5
33	3
34	7
35	2
36	4
37	6
38	5
39	2
40	6
41	3
42	3
43	4
44	7
45	3
46	6
47	4
48	4
49	5
50	5
51	2
52	7
53	2
54	2
55	3
56	5
57	4
58	6
59	4
60	4
61	4
62	6
63	3
64	9
65	4
66	5
67	6
68	5
69	3
70	7
71	2
72	5
73	7
74	7
75	4
76	10
77	7
78	6
79	7
80	9
81	3
82	8
83	3
84	4
85	7
86	7
87	5
88	10
89	6
90	5
91	6
92	10
93	6
94	11
95	5
96	5
97	9
98	5
99	3
100	12

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	2
7	2
8	3
9	2
10	3
11	1
12	2
13	3
14	3
15	1
16	5
17	3
18	2
19	3
20	5
21	2
22	5
23	3
24	4
25	4
26	4
27	3
28	6
29	4
30	3
31	4
32	5
33	3
34	7
35	2
36	4
37	6
38	5
39	2
40	6
41	3
42	3
43	4
44	7
45	3
46	6
47	4
48	4
49	5
50	5
51	2
52	7
53	2
54	2
55	3
56	5
57	4
58	6
59	4
60	4
61	4
62	6
63	3
64	9
65	4
66	5
67	6
68	5
69	3
70	7
71	2
72	5
73	7
74	7
75	4
76	10
77	7
78	6
79	7
80	9
81	3
82	8
83	3
84	4
85	7
86	7
87	5
88	10
89	6
90	5
91	6
92	10
93	6
94	11
95	5
96	5
97	9
98	5
99	3
100	12