A175242 - cp's OEIS frontend

A175242 a(n) = the number of divisors of n that are palindromes when written in binary.

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

[1, 1, 2, 1, 2, 2, 2, 1, 3, 2, 1, 2, 1, 2, 4, 1, 2, 3, 1, 2, 4, 1, 1, 2, 2, 1, 4, 2, 1, 4, 2, 1, 3, 2, 3, 3, 1, 1, 2, 2, 1, 4, 1, 1, 6, 1, 1, 2, 2, 2, 4, 1, 1, 4, 2, 2, 2, 1, 1, 4, 1, 2, 6, 1, 3, 3, 1, 2, 2, 3, 1, 3, 2, 1, 4, 1, 2, 2, 1, 2, 4, 1, 1, 4, 4, 1, 2, 1, 1, 6, 2, 1, 4, 1, 2, 2, 1, 2, 5, 2, 1, 4, 1, 1, 6]

cp's OEIS Frontend

A175242 a(n) = the number of divisors of n that are palindromes when written in binary.

Table of values

List of values

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

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

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