A271824 - cp's OEIS frontend

A271824 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with (x+2y)^2 + 8z^2 + 40*w^2 a square, where x is a positive integer and y,z,w are nonnegative integers.

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

[1, 2, 2, 1, 2, 2, 2, 2, 1, 4, 1, 3, 3, 2, 1, 1, 3, 6, 3, 3, 4, 1, 1, 2, 3, 4, 3, 3, 2, 5, 4, 2, 1, 3, 3, 3, 5, 1, 5, 4, 2, 6, 3, 2, 5, 3, 3, 3, 2, 8, 3, 6, 6, 4, 4, 2, 4, 6, 3, 3, 5, 3, 4, 1, 5, 5, 4, 4, 2, 6, 1, 6, 2, 4, 7, 4, 3, 5, 7, 3]

cp's OEIS Frontend

A271824 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with (x+2y)^2 + 8z^2 + 40*w^2 a square, where x is a positive integer and y,z,w are nonnegative integers.

Table of values

List of values

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

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

cp's OEIS Frontend

A271824 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with (x+2*y)^2 + 8*z^2 + 40*w^2 a square, where x is a positive integer and y,z,w are nonnegative integers.

Table of values

List of values

A271824 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 with (x+2y)^2 + 8z^2 + 40*w^2 a square, where x is a positive integer and y,z,w are nonnegative integers.

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