A340069 - cp's OEIS frontend

A340069 a(n) is the smallest number k not yet used such that the number of 1-bits in the binary representation of k equals the number of 1-bits in the binary representation of k*n.

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	7
6	6
7	14
8	5
9	15
10	27
11	12
12	24
13	10
14	19
15	30
16	8
17	31
18	43
19	28
20	39
21	13
22	35
23	45
24	48
25	62
26	20
27	57
28	37
29	63
30	60
31	79
32	9
33	126
34	91
35	11
36	86
37	29
38	56
39	23
40	54
41	75
42	26
43	51
44	70
45	46
46	47
47	22
48	89
49	21
50	93
51	83
52	40
53	61
54	114
55	78
56	38
57	18
58	71
59	87
60	77
61	42
62	124
63	127
64	16
65	254
66	187
67	92
68	151
69	90
70	44
71	58
72	117

[0, 1, 2, 3, 4, 7, 6, 14, 5, 15, 27, 12, 24, 10, 19, 30, 8, 31, 43, 28, 39, 13, 35, 45, 48, 62, 20, 57, 37, 63, 60, 79, 9, 126, 91, 11, 86, 29, 56, 23, 54, 75, 26, 51, 70, 46, 47, 22, 89, 21, 93, 83, 40, 61, 114, 78, 38, 18, 71, 87, 77, 42, 124, 127, 16, 254, 187, 92, 151, 90, 44, 58, 117]

cp's OEIS Frontend

A340069 a(n) is the smallest number k not yet used such that the number of 1-bits in the binary representation of k equals the number of 1-bits in the binary representation of k*n.

Table of values

List of values

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	7
6	6
7	14
8	5
9	15
10	27
11	12
12	24
13	10
14	19
15	30
16	8
17	31
18	43
19	28
20	39
21	13
22	35
23	45
24	48
25	62
26	20
27	57
28	37
29	63
30	60
31	79
32	9
33	126
34	91
35	11
36	86
37	29
38	56
39	23
40	54
41	75
42	26
43	51
44	70
45	46
46	47
47	22
48	89
49	21
50	93
51	83
52	40
53	61
54	114
55	78
56	38
57	18
58	71
59	87
60	77
61	42
62	124
63	127
64	16
65	254
66	187
67	92
68	151
69	90
70	44
71	58
72	117

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	7
6	6
7	14
8	5
9	15
10	27
11	12
12	24
13	10
14	19
15	30
16	8
17	31
18	43
19	28
20	39
21	13
22	35
23	45
24	48
25	62
26	20
27	57
28	37
29	63
30	60
31	79
32	9
33	126
34	91
35	11
36	86
37	29
38	56
39	23
40	54
41	75
42	26
43	51
44	70
45	46
46	47
47	22
48	89
49	21
50	93
51	83
52	40
53	61
54	114
55	78
56	38
57	18
58	71
59	87
60	77
61	42
62	124
63	127
64	16
65	254
66	187
67	92
68	151
69	90
70	44
71	58
72	117

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	7
6	6
7	14
8	5
9	15
10	27
11	12
12	24
13	10
14	19
15	30
16	8
17	31
18	43
19	28
20	39
21	13
22	35
23	45
24	48
25	62
26	20
27	57
28	37
29	63
30	60
31	79
32	9
33	126
34	91
35	11
36	86
37	29
38	56
39	23
40	54
41	75
42	26
43	51
44	70
45	46
46	47
47	22
48	89
49	21
50	93
51	83
52	40
53	61
54	114
55	78
56	38
57	18
58	71
59	87
60	77
61	42
62	124
63	127
64	16
65	254
66	187
67	92
68	151
69	90
70	44
71	58
72	117