A178043 - cp's OEIS frontend

A178043 n-th semiprime minus number of distinct transpositions of digits (zeros and units) in n-th semiprime written in base 2.

n	a(n)
1	1
2	3
3	3
4	4
5	10
6	14
7	11
8	12
9	15
10	16
11	18
12	19
13	15
14	18
15	24
16	31
17	29
18	36
19	49
20	42
21	43
22	56
23	44
24	34
25	39
26	42
27	47
28	50
29	51
30	66
31	70
32	72
33	73
34	88
35	71
36	104
37	94
38	97
39	112
40	100
41	101
42	116
43	101
44	77
45	78
46	71
47	72
48	87
49	89
50	90
51	99
52	102
53	131
54	105
55	96
56	99
57	107
58	108
59	155
60	129
61	159
62	138
63	131
64	132
65	147

[1, 3, 3, 4, 10, 14, 11, 12, 15, 16, 18, 19, 15, 18, 24, 31, 29, 36, 49, 42, 43, 56, 44, 34, 39, 42, 47, 50, 51, 66, 70, 72, 73, 88, 71, 104, 94, 97, 112, 100, 101, 116, 101, 77, 78, 71, 72, 87, 89, 90, 99, 102, 131, 105, 96, 99, 107, 108, 155, 129, 159, 138, 131, 132, 147]

cp's OEIS Frontend

A178043 n-th semiprime minus number of distinct transpositions of digits (zeros and units) in n-th semiprime written in base 2.

Table of values

List of values

n	a(n)
1	1
2	3
3	3
4	4
5	10
6	14
7	11
8	12
9	15
10	16
11	18
12	19
13	15
14	18
15	24
16	31
17	29
18	36
19	49
20	42
21	43
22	56
23	44
24	34
25	39
26	42
27	47
28	50
29	51
30	66
31	70
32	72
33	73
34	88
35	71
36	104
37	94
38	97
39	112
40	100
41	101
42	116
43	101
44	77
45	78
46	71
47	72
48	87
49	89
50	90
51	99
52	102
53	131
54	105
55	96
56	99
57	107
58	108
59	155
60	129
61	159
62	138
63	131
64	132
65	147

n	a(n)
1	1
2	3
3	3
4	4
5	10
6	14
7	11
8	12
9	15
10	16
11	18
12	19
13	15
14	18
15	24
16	31
17	29
18	36
19	49
20	42
21	43
22	56
23	44
24	34
25	39
26	42
27	47
28	50
29	51
30	66
31	70
32	72
33	73
34	88
35	71
36	104
37	94
38	97
39	112
40	100
41	101
42	116
43	101
44	77
45	78
46	71
47	72
48	87
49	89
50	90
51	99
52	102
53	131
54	105
55	96
56	99
57	107
58	108
59	155
60	129
61	159
62	138
63	131
64	132
65	147

n	a(n)
1	1
2	3
3	3
4	4
5	10
6	14
7	11
8	12
9	15
10	16
11	18
12	19
13	15
14	18
15	24
16	31
17	29
18	36
19	49
20	42
21	43
22	56
23	44
24	34
25	39
26	42
27	47
28	50
29	51
30	66
31	70
32	72
33	73
34	88
35	71
36	104
37	94
38	97
39	112
40	100
41	101
42	116
43	101
44	77
45	78
46	71
47	72
48	87
49	89
50	90
51	99
52	102
53	131
54	105
55	96
56	99
57	107
58	108
59	155
60	129
61	159
62	138
63	131
64	132
65	147