A053738 - cp's OEIS frontend

A053738 If k is in sequence then 2k and 2k+1 are not (and 1 is in the sequence); numbers with an odd number of digits in binary.

n	a(n)
1	1
2	4
3	5
4	6
5	7
6	16
7	17
8	18
9	19
10	20
11	21
12	22
13	23
14	24
15	25
16	26
17	27
18	28
19	29
20	30
21	31
22	64
23	65
24	66
25	67
26	68
27	69
28	70
29	71
30	72
31	73
32	74
33	75
34	76
35	77
36	78
37	79
38	80
39	81
40	82
41	83
42	84
43	85
44	86
45	87
46	88
47	89
48	90
49	91
50	92
51	93
52	94
53	95
54	96
55	97
56	98
57	99
58	100
59	101
60	102
61	103
62	104
63	105
64	106
65	107
66	108
67	109

[1, 4, 5, 6, 7, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109]

cp's OEIS Frontend

A053738 If k is in sequence then 2k and 2k+1 are not (and 1 is in the sequence); numbers with an odd number of digits in binary.

Table of values

List of values

n	a(n)
1	1
2	4
3	5
4	6
5	7
6	16
7	17
8	18
9	19
10	20
11	21
12	22
13	23
14	24
15	25
16	26
17	27
18	28
19	29
20	30
21	31
22	64
23	65
24	66
25	67
26	68
27	69
28	70
29	71
30	72
31	73
32	74
33	75
34	76
35	77
36	78
37	79
38	80
39	81
40	82
41	83
42	84
43	85
44	86
45	87
46	88
47	89
48	90
49	91
50	92
51	93
52	94
53	95
54	96
55	97
56	98
57	99
58	100
59	101
60	102
61	103
62	104
63	105
64	106
65	107
66	108
67	109

n	a(n)
1	1
2	4
3	5
4	6
5	7
6	16
7	17
8	18
9	19
10	20
11	21
12	22
13	23
14	24
15	25
16	26
17	27
18	28
19	29
20	30
21	31
22	64
23	65
24	66
25	67
26	68
27	69
28	70
29	71
30	72
31	73
32	74
33	75
34	76
35	77
36	78
37	79
38	80
39	81
40	82
41	83
42	84
43	85
44	86
45	87
46	88
47	89
48	90
49	91
50	92
51	93
52	94
53	95
54	96
55	97
56	98
57	99
58	100
59	101
60	102
61	103
62	104
63	105
64	106
65	107
66	108
67	109

cp's OEIS Frontend

A053738 If k is in sequence then 2*k and 2*k+1 are not (and 1 is in the sequence); numbers with an odd number of digits in binary.

Table of values

List of values

A053738 If k is in sequence then 2k and 2k+1 are not (and 1 is in the sequence); numbers with an odd number of digits in binary.

n	a(n)
1	1
2	4
3	5
4	6
5	7
6	16
7	17
8	18
9	19
10	20
11	21
12	22
13	23
14	24
15	25
16	26
17	27
18	28
19	29
20	30
21	31
22	64
23	65
24	66
25	67
26	68
27	69
28	70
29	71
30	72
31	73
32	74
33	75
34	76
35	77
36	78
37	79
38	80
39	81
40	82
41	83
42	84
43	85
44	86
45	87
46	88
47	89
48	90
49	91
50	92
51	93
52	94
53	95
54	96
55	97
56	98
57	99
58	100
59	101
60	102
61	103
62	104
63	105
64	106
65	107
66	108
67	109