A359402 - cp's OEIS frontend

A359402 Numbers whose binary expansion and reversed binary expansion have the same sum of positions of 1's, where positions in a sequence are read starting with 1 from the left.

n	a(n)
1	0
2	1
3	3
4	5
5	7
6	9
7	15
8	17
9	21
10	27
11	31
12	33
13	45
14	51
15	63
16	65
17	70
18	73
19	78
20	85
21	93
22	99
23	107
24	119
25	127
26	129
27	150
28	153
29	165
30	189
31	195
32	219
33	231
34	255
35	257
36	266
37	273
38	282
39	294
40	297
41	310
42	313
43	325
44	334
45	341
46	350
47	355
48	365
49	371
50	381
51	387
52	397
53	403
54	413
55	427
56	443
57	455
58	471

[0, 1, 3, 5, 7, 9, 15, 17, 21, 27, 31, 33, 45, 51, 63, 65, 70, 73, 78, 85, 93, 99, 107, 119, 127, 129, 150, 153, 165, 189, 195, 219, 231, 255, 257, 266, 273, 282, 294, 297, 310, 313, 325, 334, 341, 350, 355, 365, 371, 381, 387, 397, 403, 413, 427, 443, 455, 471]

cp's OEIS Frontend

A359402 Numbers whose binary expansion and reversed binary expansion have the same sum of positions of 1's, where positions in a sequence are read starting with 1 from the left.

Table of values

List of values

n	a(n)
1	0
2	1
3	3
4	5
5	7
6	9
7	15
8	17
9	21
10	27
11	31
12	33
13	45
14	51
15	63
16	65
17	70
18	73
19	78
20	85
21	93
22	99
23	107
24	119
25	127
26	129
27	150
28	153
29	165
30	189
31	195
32	219
33	231
34	255
35	257
36	266
37	273
38	282
39	294
40	297
41	310
42	313
43	325
44	334
45	341
46	350
47	355
48	365
49	371
50	381
51	387
52	397
53	403
54	413
55	427
56	443
57	455
58	471

n	a(n)
1	0
2	1
3	3
4	5
5	7
6	9
7	15
8	17
9	21
10	27
11	31
12	33
13	45
14	51
15	63
16	65
17	70
18	73
19	78
20	85
21	93
22	99
23	107
24	119
25	127
26	129
27	150
28	153
29	165
30	189
31	195
32	219
33	231
34	255
35	257
36	266
37	273
38	282
39	294
40	297
41	310
42	313
43	325
44	334
45	341
46	350
47	355
48	365
49	371
50	381
51	387
52	397
53	403
54	413
55	427
56	443
57	455
58	471

n	a(n)
1	0
2	1
3	3
4	5
5	7
6	9
7	15
8	17
9	21
10	27
11	31
12	33
13	45
14	51
15	63
16	65
17	70
18	73
19	78
20	85
21	93
22	99
23	107
24	119
25	127
26	129
27	150
28	153
29	165
30	189
31	195
32	219
33	231
34	255
35	257
36	266
37	273
38	282
39	294
40	297
41	310
42	313
43	325
44	334
45	341
46	350
47	355
48	365
49	371
50	381
51	387
52	397
53	403
54	413
55	427
56	443
57	455
58	471