A350021 - cp's OEIS frontend

A350021 Number of ways to write n as w^4 + x^2 + y^2 + z^2 with x - y a power of two (including 2^0 = 1).

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

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

cp's OEIS Frontend

A350021 Number of ways to write n as w^4 + x^2 + y^2 + z^2 with x - y a power of two (including 2^0 = 1).

Table of values

List of values

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

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

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