A090330 - cp's OEIS frontend

A090330 Number of divisors >1 of n that are prefixes of other divisors of n in binary representation.

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

[0, 0, 0, 1, 0, 1, 0, 2, 0, 2, 0, 3, 0, 1, 1, 3, 0, 3, 0, 3, 1, 2, 0, 5, 0, 1, 1, 3, 0, 4, 0, 4, 0, 2, 0, 6, 0, 2, 1, 5, 0, 4, 0, 3, 2, 2, 0, 7, 0, 3, 1, 3, 0, 5, 1, 5, 1, 1, 0, 7, 0, 1, 2, 5, 0, 4, 0, 4, 0, 4, 0, 8, 0, 2, 1, 4, 0, 5, 0, 7, 1, 2, 0, 7, 1, 2, 1, 5, 0, 6, 0, 3, 1, 2, 1, 9, 0, 2, 1, 5, 0, 5]

cp's OEIS Frontend

A090330 Number of divisors >1 of n that are prefixes of other divisors of n in binary representation.

Table of values

List of values

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

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

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