A307230 - cp's OEIS frontend

A307230 Number of divisible pairs of distinct positive integers up to n with at least one binary carry.

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	2
6	4
7	5
8	5
9	7
10	8
11	9
12	11
13	12
14	14
15	17
16	17
17	18
18	21
19	22
20	24
21	27
22	29
23	30
24	32
25	34
26	36
27	39
28	42
29	43
30	49
31	50
32	50
33	53
34	54
35	57
36	60
37	61
38	63
39	66
40	68
41	69
42	74
43	75
44	78
45	83
46	85
47	86
48	88
49	90
50	93
51	96
52	99
53	100
54	105
55	108
56	111
57	114
58	116
59	117
60	125
61	126
62	128
63	133
64	133

[0, 0, 0, 1, 1, 2, 4, 5, 5, 7, 8, 9, 11, 12, 14, 17, 17, 18, 21, 22, 24, 27, 29, 30, 32, 34, 36, 39, 42, 43, 49, 50, 50, 53, 54, 57, 60, 61, 63, 66, 68, 69, 74, 75, 78, 83, 85, 86, 88, 90, 93, 96, 99, 100, 105, 108, 111, 114, 116, 117, 125, 126, 128, 133, 133]

cp's OEIS Frontend

A307230 Number of divisible pairs of distinct positive integers up to n with at least one binary carry.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	2
6	4
7	5
8	5
9	7
10	8
11	9
12	11
13	12
14	14
15	17
16	17
17	18
18	21
19	22
20	24
21	27
22	29
23	30
24	32
25	34
26	36
27	39
28	42
29	43
30	49
31	50
32	50
33	53
34	54
35	57
36	60
37	61
38	63
39	66
40	68
41	69
42	74
43	75
44	78
45	83
46	85
47	86
48	88
49	90
50	93
51	96
52	99
53	100
54	105
55	108
56	111
57	114
58	116
59	117
60	125
61	126
62	128
63	133
64	133

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	2
6	4
7	5
8	5
9	7
10	8
11	9
12	11
13	12
14	14
15	17
16	17
17	18
18	21
19	22
20	24
21	27
22	29
23	30
24	32
25	34
26	36
27	39
28	42
29	43
30	49
31	50
32	50
33	53
34	54
35	57
36	60
37	61
38	63
39	66
40	68
41	69
42	74
43	75
44	78
45	83
46	85
47	86
48	88
49	90
50	93
51	96
52	99
53	100
54	105
55	108
56	111
57	114
58	116
59	117
60	125
61	126
62	128
63	133
64	133

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	2
6	4
7	5
8	5
9	7
10	8
11	9
12	11
13	12
14	14
15	17
16	17
17	18
18	21
19	22
20	24
21	27
22	29
23	30
24	32
25	34
26	36
27	39
28	42
29	43
30	49
31	50
32	50
33	53
34	54
35	57
36	60
37	61
38	63
39	66
40	68
41	69
42	74
43	75
44	78
45	83
46	85
47	86
48	88
49	90
50	93
51	96
52	99
53	100
54	105
55	108
56	111
57	114
58	116
59	117
60	125
61	126
62	128
63	133
64	133