A347347 - cp's OEIS frontend

A347347 If n is odd, a(n) is the smallest positive integer that is a palindrome when represented in binary, and is made by appending some number (zero or more) of binary digits on the left of n's binary representation. If n is even, then a(n) = 0.

n	a(n)
1	1
2	0
3	3
4	0
5	5
6	0
7	7
8	0
9	9
10	0
11	27
12	0
13	45
14	0
15	15
16	0
17	17
18	0
19	51
20	0
21	21
22	0
23	119
24	0
25	153
26	0
27	27
28	0
29	93
30	0
31	31
32	0
33	33
34	0
35	99
36	0
37	165
38	0
39	231
40	0
41	297
42	0
43	107
44	0
45	45
46	0
47	495
48	0
49	561
50	0
51	51
52	0
53	693
54	0
55	119
56	0
57	313
58	0
59	443
60	0
61	189
62	0
63	63
64	0
65	65
66	0
67	195
68	0
69	325
70	0
71	455
72	0

[1, 0, 3, 0, 5, 0, 7, 0, 9, 0, 27, 0, 45, 0, 15, 0, 17, 0, 51, 0, 21, 0, 119, 0, 153, 0, 27, 0, 93, 0, 31, 0, 33, 0, 99, 0, 165, 0, 231, 0, 297, 0, 107, 0, 45, 0, 495, 0, 561, 0, 51, 0, 693, 0, 119, 0, 313, 0, 443, 0, 189, 0, 63, 0, 65, 0, 195, 0, 325, 0, 455, 0]

cp's OEIS Frontend

A347347 If n is odd, a(n) is the smallest positive integer that is a palindrome when represented in binary, and is made by appending some number (zero or more) of binary digits on the left of n's binary representation. If n is even, then a(n) = 0.

Table of values

List of values

n	a(n)
1	1
2	0
3	3
4	0
5	5
6	0
7	7
8	0
9	9
10	0
11	27
12	0
13	45
14	0
15	15
16	0
17	17
18	0
19	51
20	0
21	21
22	0
23	119
24	0
25	153
26	0
27	27
28	0
29	93
30	0
31	31
32	0
33	33
34	0
35	99
36	0
37	165
38	0
39	231
40	0
41	297
42	0
43	107
44	0
45	45
46	0
47	495
48	0
49	561
50	0
51	51
52	0
53	693
54	0
55	119
56	0
57	313
58	0
59	443
60	0
61	189
62	0
63	63
64	0
65	65
66	0
67	195
68	0
69	325
70	0
71	455
72	0

n	a(n)
1	1
2	0
3	3
4	0
5	5
6	0
7	7
8	0
9	9
10	0
11	27
12	0
13	45
14	0
15	15
16	0
17	17
18	0
19	51
20	0
21	21
22	0
23	119
24	0
25	153
26	0
27	27
28	0
29	93
30	0
31	31
32	0
33	33
34	0
35	99
36	0
37	165
38	0
39	231
40	0
41	297
42	0
43	107
44	0
45	45
46	0
47	495
48	0
49	561
50	0
51	51
52	0
53	693
54	0
55	119
56	0
57	313
58	0
59	443
60	0
61	189
62	0
63	63
64	0
65	65
66	0
67	195
68	0
69	325
70	0
71	455
72	0

n	a(n)
1	1
2	0
3	3
4	0
5	5
6	0
7	7
8	0
9	9
10	0
11	27
12	0
13	45
14	0
15	15
16	0
17	17
18	0
19	51
20	0
21	21
22	0
23	119
24	0
25	153
26	0
27	27
28	0
29	93
30	0
31	31
32	0
33	33
34	0
35	99
36	0
37	165
38	0
39	231
40	0
41	297
42	0
43	107
44	0
45	45
46	0
47	495
48	0
49	561
50	0
51	51
52	0
53	693
54	0
55	119
56	0
57	313
58	0
59	443
60	0
61	189
62	0
63	63
64	0
65	65
66	0
67	195
68	0
69	325
70	0
71	455
72	0