A193773 - cp's OEIS frontend

A193773 Number of ways to write n as 2xy - x - y with 1 <= x <= y.

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

[1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 2, 1, 1, 3, 1, 2, 2, 1, 2, 2, 1, 1, 3, 2, 1, 2, 1, 1, 3, 2, 1, 3, 1, 2, 2, 1, 2, 2, 2, 1, 3, 1, 1, 4, 1, 1, 2, 1, 2, 3, 2, 2, 2, 2, 1, 2, 1, 2, 4, 1, 1, 2, 2, 2, 3, 1, 1, 3, 2, 1, 2, 2, 1, 4, 1, 2, 3]

cp's OEIS Frontend

A193773 Number of ways to write n as 2xy - x - y with 1 <= x <= y.

Table of values

List of values

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

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

cp's OEIS Frontend

A193773 Number of ways to write n as 2*x*y - x - y with 1 <= x <= y.

Table of values

List of values

A193773 Number of ways to write n as 2xy - x - y with 1 <= x <= y.

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