A297706 - cp's OEIS frontend

A297706 Lexicographically earliest sequence of distinct positive terms such that for any n > 0, a(n) XOR a(n+1) XOR a(n+2) is prime (where XOR denotes the bitwise XOR operator).

n	a(n)
1	1
2	2
3	4
4	3
5	5
6	11
7	9
8	7
9	12
10	6
11	8
12	13
13	14
14	16
15	15
16	18
17	10
18	19
19	20
20	22
21	17
22	24
23	26
24	21
25	28
26	30
27	29
28	38
29	36
30	31
31	40
32	32
33	23
34	42
35	34
36	25
37	44
38	48
39	27
40	41
41	33
42	35
43	39
44	43
45	37
46	51
47	45
48	49
49	53
50	47
51	63
52	57
53	59
54	55
55	67
56	61
57	69
58	77
59	65
60	75
61	73
62	81
63	87
64	79
65	91
66	71
67	83

[1, 2, 4, 3, 5, 11, 9, 7, 12, 6, 8, 13, 14, 16, 15, 18, 10, 19, 20, 22, 17, 24, 26, 21, 28, 30, 29, 38, 36, 31, 40, 32, 23, 42, 34, 25, 44, 48, 27, 41, 33, 35, 39, 43, 37, 51, 45, 49, 53, 47, 63, 57, 59, 55, 67, 61, 69, 77, 65, 75, 73, 81, 87, 79, 91, 71, 83]

cp's OEIS Frontend

A297706 Lexicographically earliest sequence of distinct positive terms such that for any n > 0, a(n) XOR a(n+1) XOR a(n+2) is prime (where XOR denotes the bitwise XOR operator).

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	3
5	5
6	11
7	9
8	7
9	12
10	6
11	8
12	13
13	14
14	16
15	15
16	18
17	10
18	19
19	20
20	22
21	17
22	24
23	26
24	21
25	28
26	30
27	29
28	38
29	36
30	31
31	40
32	32
33	23
34	42
35	34
36	25
37	44
38	48
39	27
40	41
41	33
42	35
43	39
44	43
45	37
46	51
47	45
48	49
49	53
50	47
51	63
52	57
53	59
54	55
55	67
56	61
57	69
58	77
59	65
60	75
61	73
62	81
63	87
64	79
65	91
66	71
67	83

n	a(n)
1	1
2	2
3	4
4	3
5	5
6	11
7	9
8	7
9	12
10	6
11	8
12	13
13	14
14	16
15	15
16	18
17	10
18	19
19	20
20	22
21	17
22	24
23	26
24	21
25	28
26	30
27	29
28	38
29	36
30	31
31	40
32	32
33	23
34	42
35	34
36	25
37	44
38	48
39	27
40	41
41	33
42	35
43	39
44	43
45	37
46	51
47	45
48	49
49	53
50	47
51	63
52	57
53	59
54	55
55	67
56	61
57	69
58	77
59	65
60	75
61	73
62	81
63	87
64	79
65	91
66	71
67	83

n	a(n)
1	1
2	2
3	4
4	3
5	5
6	11
7	9
8	7
9	12
10	6
11	8
12	13
13	14
14	16
15	15
16	18
17	10
18	19
19	20
20	22
21	17
22	24
23	26
24	21
25	28
26	30
27	29
28	38
29	36
30	31
31	40
32	32
33	23
34	42
35	34
36	25
37	44
38	48
39	27
40	41
41	33
42	35
43	39
44	43
45	37
46	51
47	45
48	49
49	53
50	47
51	63
52	57
53	59
54	55
55	67
56	61
57	69
58	77
59	65
60	75
61	73
62	81
63	87
64	79
65	91
66	71
67	83