A266347 - cp's OEIS frontend

A266347 Numbers that cannot be represented as the product of two numbers with an equal number of significant digits (bits) in their binary representations.

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

[2, 3, 5, 7, 8, 10, 11, 12, 13, 14, 15, 17, 18, 19, 21, 22, 23, 26, 27, 29, 31, 32, 33, 34, 37, 38, 39, 40, 41, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 82, 83, 84, 85, 86, 87, 89, 91, 92, 93, 94, 95, 97, 98, 101, 102, 103, 105]

cp's OEIS Frontend

A266347 Numbers that cannot be represented as the product of two numbers with an equal number of significant digits (bits) in their binary representations.

Table of values

List of values

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

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

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