A230747 - cp's OEIS frontend

A230747 Number of ways to write n = x + y + 2z with 0 < x <= y and z > 0 such that x^2 + y^2 + 2z^2 is a square.

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	0
8	1
9	1
10	1
11	0
12	1
13	2
14	0
15	1
16	4
17	0
18	2
19	1
20	3
21	1
22	1
23	1
24	1
25	4
26	4
27	3
28	1
29	2
30	3
31	1
32	8
33	2
34	1
35	3
36	4
37	4
38	3
39	6
40	3
41	2
42	4
43	3
44	3
45	5
46	3
47	2
48	7
49	7
50	8
51	3
52	7
53	5
54	6
55	6
56	1
57	4
58	4
59	6
60	8
61	7
62	2
63	6
64	14
65	8
66	6
67	5
68	7
69	4
70	10
71	6
72	4
73	5
74	7
75	7
76	6
77	10
78	10
79	4
80	14
81	11
82	6
83	8
84	11
85	8
86	6
87	6
88	3
89	8
90	10
91	11
92	9
93	7
94	6
95	13
96	19
97	4
98	11
99	8
100	16

[0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 2, 0, 1, 4, 0, 2, 1, 3, 1, 1, 1, 1, 4, 4, 3, 1, 2, 3, 1, 8, 2, 1, 3, 4, 4, 3, 6, 3, 2, 4, 3, 3, 5, 3, 2, 7, 7, 8, 3, 7, 5, 6, 6, 1, 4, 4, 6, 8, 7, 2, 6, 14, 8, 6, 5, 7, 4, 10, 6, 4, 5, 7, 7, 6, 10, 10, 4, 14, 11, 6, 8, 11, 8, 6, 6, 3, 8, 10, 11, 9, 7, 6, 13, 19, 4, 11, 8, 16]

cp's OEIS Frontend

A230747 Number of ways to write n = x + y + 2z with 0 < x <= y and z > 0 such that x^2 + y^2 + 2z^2 is a square.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	0
8	1
9	1
10	1
11	0
12	1
13	2
14	0
15	1
16	4
17	0
18	2
19	1
20	3
21	1
22	1
23	1
24	1
25	4
26	4
27	3
28	1
29	2
30	3
31	1
32	8
33	2
34	1
35	3
36	4
37	4
38	3
39	6
40	3
41	2
42	4
43	3
44	3
45	5
46	3
47	2
48	7
49	7
50	8
51	3
52	7
53	5
54	6
55	6
56	1
57	4
58	4
59	6
60	8
61	7
62	2
63	6
64	14
65	8
66	6
67	5
68	7
69	4
70	10
71	6
72	4
73	5
74	7
75	7
76	6
77	10
78	10
79	4
80	14
81	11
82	6
83	8
84	11
85	8
86	6
87	6
88	3
89	8
90	10
91	11
92	9
93	7
94	6
95	13
96	19
97	4
98	11
99	8
100	16

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	0
8	1
9	1
10	1
11	0
12	1
13	2
14	0
15	1
16	4
17	0
18	2
19	1
20	3
21	1
22	1
23	1
24	1
25	4
26	4
27	3
28	1
29	2
30	3
31	1
32	8
33	2
34	1
35	3
36	4
37	4
38	3
39	6
40	3
41	2
42	4
43	3
44	3
45	5
46	3
47	2
48	7
49	7
50	8
51	3
52	7
53	5
54	6
55	6
56	1
57	4
58	4
59	6
60	8
61	7
62	2
63	6
64	14
65	8
66	6
67	5
68	7
69	4
70	10
71	6
72	4
73	5
74	7
75	7
76	6
77	10
78	10
79	4
80	14
81	11
82	6
83	8
84	11
85	8
86	6
87	6
88	3
89	8
90	10
91	11
92	9
93	7
94	6
95	13
96	19
97	4
98	11
99	8
100	16

cp's OEIS Frontend

A230747 Number of ways to write n = x + y + 2*z with 0 < x <= y and z > 0 such that x^2 + y^2 + 2*z^2 is a square.

Table of values

List of values

A230747 Number of ways to write n = x + y + 2z with 0 < x <= y and z > 0 such that x^2 + y^2 + 2z^2 is a square.

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	0
8	1
9	1
10	1
11	0
12	1
13	2
14	0
15	1
16	4
17	0
18	2
19	1
20	3
21	1
22	1
23	1
24	1
25	4
26	4
27	3
28	1
29	2
30	3
31	1
32	8
33	2
34	1
35	3
36	4
37	4
38	3
39	6
40	3
41	2
42	4
43	3
44	3
45	5
46	3
47	2
48	7
49	7
50	8
51	3
52	7
53	5
54	6
55	6
56	1
57	4
58	4
59	6
60	8
61	7
62	2
63	6
64	14
65	8
66	6
67	5
68	7
69	4
70	10
71	6
72	4
73	5
74	7
75	7
76	6
77	10
78	10
79	4
80	14
81	11
82	6
83	8
84	11
85	8
86	6
87	6
88	3
89	8
90	10
91	11
92	9
93	7
94	6
95	13
96	19
97	4
98	11
99	8
100	16