A369233 - cp's OEIS frontend

A369233 Smallest base for which the digits expansion of 2^n is palindromic.

n	a(n)
1	3
2	3
3	3
4	3
5	7
6	7
7	7
8	15
9	7
10	7
11	31
12	7
13	15
14	15
15	31
16	15
17	15
18	31
19	63
20	15
21	31
22	31
23	127
24	63
25	31
26	31
27	63
28	127
29	127
30	31
31	63
32	63
33	255
34	255
35	127
36	63
37	63
38	127
39	511
40	255
41	255
42	63
43	127
44	127
45	511
46	511
47	511
48	255
49	127
50	127
51	255
52	1023
53	1023
54	511
55	511
56	127
57	255
58	255
59	2047
60	1023
61	1023
62	1023
63	127
64	255

[3, 3, 3, 3, 7, 7, 7, 15, 7, 7, 31, 7, 15, 15, 31, 15, 15, 31, 63, 15, 31, 31, 127, 63, 31, 31, 63, 127, 127, 31, 63, 63, 255, 255, 127, 63, 63, 127, 511, 255, 255, 63, 127, 127, 511, 511, 511, 255, 127, 127, 255, 1023, 1023, 511, 511, 127, 255, 255, 2047, 1023, 1023, 1023, 127, 255]

cp's OEIS Frontend

A369233 Smallest base for which the digits expansion of 2^n is palindromic.

Table of values

List of values