A125203 - cp's OEIS frontend

A125203 Number of ways to write n as 4xy - x - y with 1<=x<=y.

n	a(n)
1	0
2	1
3	0
4	0
5	1
6	0
7	0
8	1
9	0
10	0
11	1
12	1
13	0
14	1
15	0
16	0
17	1
18	0
19	1
20	1
21	0
22	0
23	1
24	0
25	0
26	2
27	0
28	0
29	1
30	1
31	0
32	1
33	1
34	0
35	1
36	0
37	0
38	1
39	0
40	1
41	2
42	0
43	0
44	1
45	0
46	0
47	2
48	0
49	0
50	1
51	0
52	1
53	1
54	1
55	0
56	2
57	0
58	0
59	1
60	0
61	1
62	1
63	1
64	0
65	1
66	0
67	0
68	2
69	0
70	0
71	2
72	0
73	0
74	2
75	1
76	0
77	1
78	0
79	0
80	1
81	0
82	1
83	1
84	0
85	1
86	2
87	0
88	0
89	2
90	1
91	0
92	1
93	0
94	0
95	1
96	2
97	0
98	1
99	0
100	0
101	2
102	0
103	1
104	1
105	0

[0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 2, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 2, 0, 0, 1, 0, 0, 2, 0, 0, 1, 0, 1, 1, 1, 0, 2, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 2, 0, 0, 2, 0, 0, 2, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 2, 0, 0, 2, 1, 0, 1, 0, 0, 1, 2, 0, 1, 0, 0, 2, 0, 1, 1, 0]

cp's OEIS Frontend

A125203 Number of ways to write n as 4xy - x - y with 1<=x<=y.

Table of values

List of values

n	a(n)
1	0
2	1
3	0
4	0
5	1
6	0
7	0
8	1
9	0
10	0
11	1
12	1
13	0
14	1
15	0
16	0
17	1
18	0
19	1
20	1
21	0
22	0
23	1
24	0
25	0
26	2
27	0
28	0
29	1
30	1
31	0
32	1
33	1
34	0
35	1
36	0
37	0
38	1
39	0
40	1
41	2
42	0
43	0
44	1
45	0
46	0
47	2
48	0
49	0
50	1
51	0
52	1
53	1
54	1
55	0
56	2
57	0
58	0
59	1
60	0
61	1
62	1
63	1
64	0
65	1
66	0
67	0
68	2
69	0
70	0
71	2
72	0
73	0
74	2
75	1
76	0
77	1
78	0
79	0
80	1
81	0
82	1
83	1
84	0
85	1
86	2
87	0
88	0
89	2
90	1
91	0
92	1
93	0
94	0
95	1
96	2
97	0
98	1
99	0
100	0
101	2
102	0
103	1
104	1
105	0

n	a(n)
1	0
2	1
3	0
4	0
5	1
6	0
7	0
8	1
9	0
10	0
11	1
12	1
13	0
14	1
15	0
16	0
17	1
18	0
19	1
20	1
21	0
22	0
23	1
24	0
25	0
26	2
27	0
28	0
29	1
30	1
31	0
32	1
33	1
34	0
35	1
36	0
37	0
38	1
39	0
40	1
41	2
42	0
43	0
44	1
45	0
46	0
47	2
48	0
49	0
50	1
51	0
52	1
53	1
54	1
55	0
56	2
57	0
58	0
59	1
60	0
61	1
62	1
63	1
64	0
65	1
66	0
67	0
68	2
69	0
70	0
71	2
72	0
73	0
74	2
75	1
76	0
77	1
78	0
79	0
80	1
81	0
82	1
83	1
84	0
85	1
86	2
87	0
88	0
89	2
90	1
91	0
92	1
93	0
94	0
95	1
96	2
97	0
98	1
99	0
100	0
101	2
102	0
103	1
104	1
105	0

cp's OEIS Frontend

A125203 Number of ways to write n as 4*x*y - x - y with 1<=x<=y.

Table of values

List of values

A125203 Number of ways to write n as 4xy - x - y with 1<=x<=y.

n	a(n)
1	0
2	1
3	0
4	0
5	1
6	0
7	0
8	1
9	0
10	0
11	1
12	1
13	0
14	1
15	0
16	0
17	1
18	0
19	1
20	1
21	0
22	0
23	1
24	0
25	0
26	2
27	0
28	0
29	1
30	1
31	0
32	1
33	1
34	0
35	1
36	0
37	0
38	1
39	0
40	1
41	2
42	0
43	0
44	1
45	0
46	0
47	2
48	0
49	0
50	1
51	0
52	1
53	1
54	1
55	0
56	2
57	0
58	0
59	1
60	0
61	1
62	1
63	1
64	0
65	1
66	0
67	0
68	2
69	0
70	0
71	2
72	0
73	0
74	2
75	1
76	0
77	1
78	0
79	0
80	1
81	0
82	1
83	1
84	0
85	1
86	2
87	0
88	0
89	2
90	1
91	0
92	1
93	0
94	0
95	1
96	2
97	0
98	1
99	0
100	0
101	2
102	0
103	1
104	1
105	0