A338139 - cp's OEIS frontend

A338139 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x^2 + 26y^2 - 11x*y a power of two (including 2^0 = 1), where x, y, z, w are nonnegative integers with z <= w.

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

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

cp's OEIS Frontend

A338139 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x^2 + 26y^2 - 11x*y a power of two (including 2^0 = 1), where x, y, z, w are nonnegative integers with z <= w.

Table of values

List of values

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

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

cp's OEIS Frontend

A338139 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x^2 + 26*y^2 - 11*x*y a power of two (including 2^0 = 1), where x, y, z, w are nonnegative integers with z <= w.

Table of values

List of values

A338139 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x^2 + 26y^2 - 11x*y a power of two (including 2^0 = 1), where x, y, z, w are nonnegative integers with z <= w.

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