A211261 - cp's OEIS frontend

A211261 Number of integer pairs (x,y) such that 0 and x*y=2n.

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

[0, 0, 1, 1, 1, 2, 1, 1, 2, 2, 1, 3, 1, 2, 3, 2, 1, 3, 1, 3, 3, 2, 1, 4, 2, 2, 3, 3, 1, 5, 1, 2, 3, 2, 3, 5, 1, 2, 3, 4, 1, 5, 1, 3, 5, 2, 1, 5, 2, 3, 3, 3, 1, 5, 3, 4, 3, 2, 1, 7, 1, 2, 5, 3, 3, 5, 1, 3, 3, 5, 1, 6, 1, 2, 5, 3, 3, 5, 1, 5, 4, 2, 1, 7, 3, 2, 3, 4, 1, 8, 3, 3, 3, 2, 3, 6, 1, 3, 5]

cp's OEIS Frontend

A211261 Number of integer pairs (x,y) such that 0 and x*y=2n.

Table of values

List of values

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

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

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