A143345 - cp's OEIS frontend

A143345 Lexicographically earliest sequence such that a(n) is coprime to the preceding 4 terms (or n-1 terms if n<5) and does not occur earlier.

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	11
7	4
8	9
9	13
10	17
11	19
12	8
13	15
14	23
15	29
16	31
17	14
18	25
19	27
20	37
21	41
22	16
23	35
24	33
25	43
26	47
27	26
28	49
29	45
30	53
31	59
32	22
33	61
34	21
35	65
36	67
37	32
38	71
39	51
40	55
41	73
42	28
43	79
44	39
45	83
46	85
47	38
48	77
49	69
50	89
51	97
52	10
53	91
54	57
55	101
56	103
57	20
58	107
59	63
60	109
61	113
62	34
63	95
64	81
65	121
66	127
67	46
68	119
69	75
70	131
71	137
72	44
73	133
74	87
75	115
76	139
77	52
78	149
79	93
80	125
81	151
82	56
83	143
84	111
85	145
86	157
87	62
88	161
89	99
90	163
91	167
92	40
93	169
94	123
95	173
96	179
97	50
98	181

[1, 2, 3, 5, 7, 11, 4, 9, 13, 17, 19, 8, 15, 23, 29, 31, 14, 25, 27, 37, 41, 16, 35, 33, 43, 47, 26, 49, 45, 53, 59, 22, 61, 21, 65, 67, 32, 71, 51, 55, 73, 28, 79, 39, 83, 85, 38, 77, 69, 89, 97, 10, 91, 57, 101, 103, 20, 107, 63, 109, 113, 34, 95, 81, 121, 127, 46, 119, 75, 131, 137, 44, 133, 87, 115, 139, 52, 149, 93, 125, 151, 56, 143, 111, 145, 157, 62, 161, 99, 163, 167, 40, 169, 123, 173, 179, 50, 181]

cp's OEIS Frontend

A143345 Lexicographically earliest sequence such that a(n) is coprime to the preceding 4 terms (or n-1 terms if n<5) and does not occur earlier.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	11
7	4
8	9
9	13
10	17
11	19
12	8
13	15
14	23
15	29
16	31
17	14
18	25
19	27
20	37
21	41
22	16
23	35
24	33
25	43
26	47
27	26
28	49
29	45
30	53
31	59
32	22
33	61
34	21
35	65
36	67
37	32
38	71
39	51
40	55
41	73
42	28
43	79
44	39
45	83
46	85
47	38
48	77
49	69
50	89
51	97
52	10
53	91
54	57
55	101
56	103
57	20
58	107
59	63
60	109
61	113
62	34
63	95
64	81
65	121
66	127
67	46
68	119
69	75
70	131
71	137
72	44
73	133
74	87
75	115
76	139
77	52
78	149
79	93
80	125
81	151
82	56
83	143
84	111
85	145
86	157
87	62
88	161
89	99
90	163
91	167
92	40
93	169
94	123
95	173
96	179
97	50
98	181

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	11
7	4
8	9
9	13
10	17
11	19
12	8
13	15
14	23
15	29
16	31
17	14
18	25
19	27
20	37
21	41
22	16
23	35
24	33
25	43
26	47
27	26
28	49
29	45
30	53
31	59
32	22
33	61
34	21
35	65
36	67
37	32
38	71
39	51
40	55
41	73
42	28
43	79
44	39
45	83
46	85
47	38
48	77
49	69
50	89
51	97
52	10
53	91
54	57
55	101
56	103
57	20
58	107
59	63
60	109
61	113
62	34
63	95
64	81
65	121
66	127
67	46
68	119
69	75
70	131
71	137
72	44
73	133
74	87
75	115
76	139
77	52
78	149
79	93
80	125
81	151
82	56
83	143
84	111
85	145
86	157
87	62
88	161
89	99
90	163
91	167
92	40
93	169
94	123
95	173
96	179
97	50
98	181

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	11
7	4
8	9
9	13
10	17
11	19
12	8
13	15
14	23
15	29
16	31
17	14
18	25
19	27
20	37
21	41
22	16
23	35
24	33
25	43
26	47
27	26
28	49
29	45
30	53
31	59
32	22
33	61
34	21
35	65
36	67
37	32
38	71
39	51
40	55
41	73
42	28
43	79
44	39
45	83
46	85
47	38
48	77
49	69
50	89
51	97
52	10
53	91
54	57
55	101
56	103
57	20
58	107
59	63
60	109
61	113
62	34
63	95
64	81
65	121
66	127
67	46
68	119
69	75
70	131
71	137
72	44
73	133
74	87
75	115
76	139
77	52
78	149
79	93
80	125
81	151
82	56
83	143
84	111
85	145
86	157
87	62
88	161
89	99
90	163
91	167
92	40
93	169
94	123
95	173
96	179
97	50
98	181