A370727 - cp's OEIS frontend

A370727 Lexicographically earliest sequence of distinct positive integers such that for any n > 0, prime(n) AND a(n) = a(n) (where prime(n) denotes the n-th prime number and AND denotes the bitwise AND operator).

n	a(n)
1	2
2	1
3	4
4	3
5	8
6	5
7	16
8	17
9	6
10	9
11	7
12	32
13	33
14	10
15	11
16	20
17	18
18	12
19	64
20	65
21	72
22	13
23	19
24	24
25	96
26	36
27	34
28	35
29	37
30	48
31	14
32	128
33	129
34	130
35	21
36	22
37	25
38	131
39	38
40	40
41	49
42	52
43	15
44	192
45	68
46	66
47	67
48	23
49	97
50	69
51	41
52	39
53	80
54	26
55	256
56	257
57	260
58	258
59	261
60	264
61	27
62	288
63	50
64	51

[2, 1, 4, 3, 8, 5, 16, 17, 6, 9, 7, 32, 33, 10, 11, 20, 18, 12, 64, 65, 72, 13, 19, 24, 96, 36, 34, 35, 37, 48, 14, 128, 129, 130, 21, 22, 25, 131, 38, 40, 49, 52, 15, 192, 68, 66, 67, 23, 97, 69, 41, 39, 80, 26, 256, 257, 260, 258, 261, 264, 27, 288, 50, 51]

cp's OEIS Frontend

A370727 Lexicographically earliest sequence of distinct positive integers such that for any n > 0, prime(n) AND a(n) = a(n) (where prime(n) denotes the n-th prime number and AND denotes the bitwise AND operator).

Table of values

List of values

n	a(n)
1	2
2	1
3	4
4	3
5	8
6	5
7	16
8	17
9	6
10	9
11	7
12	32
13	33
14	10
15	11
16	20
17	18
18	12
19	64
20	65
21	72
22	13
23	19
24	24
25	96
26	36
27	34
28	35
29	37
30	48
31	14
32	128
33	129
34	130
35	21
36	22
37	25
38	131
39	38
40	40
41	49
42	52
43	15
44	192
45	68
46	66
47	67
48	23
49	97
50	69
51	41
52	39
53	80
54	26
55	256
56	257
57	260
58	258
59	261
60	264
61	27
62	288
63	50
64	51

n	a(n)
1	2
2	1
3	4
4	3
5	8
6	5
7	16
8	17
9	6
10	9
11	7
12	32
13	33
14	10
15	11
16	20
17	18
18	12
19	64
20	65
21	72
22	13
23	19
24	24
25	96
26	36
27	34
28	35
29	37
30	48
31	14
32	128
33	129
34	130
35	21
36	22
37	25
38	131
39	38
40	40
41	49
42	52
43	15
44	192
45	68
46	66
47	67
48	23
49	97
50	69
51	41
52	39
53	80
54	26
55	256
56	257
57	260
58	258
59	261
60	264
61	27
62	288
63	50
64	51

n	a(n)
1	2
2	1
3	4
4	3
5	8
6	5
7	16
8	17
9	6
10	9
11	7
12	32
13	33
14	10
15	11
16	20
17	18
18	12
19	64
20	65
21	72
22	13
23	19
24	24
25	96
26	36
27	34
28	35
29	37
30	48
31	14
32	128
33	129
34	130
35	21
36	22
37	25
38	131
39	38
40	40
41	49
42	52
43	15
44	192
45	68
46	66
47	67
48	23
49	97
50	69
51	41
52	39
53	80
54	26
55	256
56	257
57	260
58	258
59	261
60	264
61	27
62	288
63	50
64	51