A135551 - cp's OEIS frontend

A135551 Number of bases b, 1 < b < n, in which n is a palindrome.

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

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

cp's OEIS Frontend

A135551 Number of bases b, 1 < b < n, in which n is a palindrome.

Table of values

List of values

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

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

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