A329877 - cp's OEIS frontend

A329877 Lexicographically earliest sequence of positive integers such that for n > 1, the concatenation of a(n), a(n-1), ..., a(1), in binary, is a prime number.

n	a(n)
1	1
2	1
3	1
4	2
5	4
6	3
7	7
8	10
9	18
10	1
11	13
12	5
13	2
14	42
15	3
16	3
17	22
18	18
19	23
20	15
21	29
22	33
23	23
24	17
25	5
26	33
27	3
28	134
29	94
30	84
31	6
32	57
33	103
34	13
35	92
36	63
37	90
38	60
39	156
40	39
41	10
42	108
43	114
44	65
45	78
46	67
47	52
48	57
49	11
50	21
51	114
52	79
53	366
54	128
55	76
56	22
57	382
58	36
59	88
60	34
61	68
62	110
63	2
64	72
65	14
66	28

[1, 1, 1, 2, 4, 3, 7, 10, 18, 1, 13, 5, 2, 42, 3, 3, 22, 18, 23, 15, 29, 33, 23, 17, 5, 33, 3, 134, 94, 84, 6, 57, 103, 13, 92, 63, 90, 60, 156, 39, 10, 108, 114, 65, 78, 67, 52, 57, 11, 21, 114, 79, 366, 128, 76, 22, 382, 36, 88, 34, 68, 110, 2, 72, 14, 28]

cp's OEIS Frontend

A329877 Lexicographically earliest sequence of positive integers such that for n > 1, the concatenation of a(n), a(n-1), ..., a(1), in binary, is a prime number.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	4
6	3
7	7
8	10
9	18
10	1
11	13
12	5
13	2
14	42
15	3
16	3
17	22
18	18
19	23
20	15
21	29
22	33
23	23
24	17
25	5
26	33
27	3
28	134
29	94
30	84
31	6
32	57
33	103
34	13
35	92
36	63
37	90
38	60
39	156
40	39
41	10
42	108
43	114
44	65
45	78
46	67
47	52
48	57
49	11
50	21
51	114
52	79
53	366
54	128
55	76
56	22
57	382
58	36
59	88
60	34
61	68
62	110
63	2
64	72
65	14
66	28

n	a(n)
1	1
2	1
3	1
4	2
5	4
6	3
7	7
8	10
9	18
10	1
11	13
12	5
13	2
14	42
15	3
16	3
17	22
18	18
19	23
20	15
21	29
22	33
23	23
24	17
25	5
26	33
27	3
28	134
29	94
30	84
31	6
32	57
33	103
34	13
35	92
36	63
37	90
38	60
39	156
40	39
41	10
42	108
43	114
44	65
45	78
46	67
47	52
48	57
49	11
50	21
51	114
52	79
53	366
54	128
55	76
56	22
57	382
58	36
59	88
60	34
61	68
62	110
63	2
64	72
65	14
66	28

n	a(n)
1	1
2	1
3	1
4	2
5	4
6	3
7	7
8	10
9	18
10	1
11	13
12	5
13	2
14	42
15	3
16	3
17	22
18	18
19	23
20	15
21	29
22	33
23	23
24	17
25	5
26	33
27	3
28	134
29	94
30	84
31	6
32	57
33	103
34	13
35	92
36	63
37	90
38	60
39	156
40	39
41	10
42	108
43	114
44	65
45	78
46	67
47	52
48	57
49	11
50	21
51	114
52	79
53	366
54	128
55	76
56	22
57	382
58	36
59	88
60	34
61	68
62	110
63	2
64	72
65	14
66	28