A115928 - cp's OEIS frontend

A115928 Smallest number which is coprime to the last four predecessors and not occurring earlier; a(1)=1, a(2)=2, a(3)=3 & a(4)=4.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	9
8	8
9	11
10	13
11	15
12	14
13	17
14	19
15	23
16	6
17	25
18	29
19	31
20	12
21	35
22	37
23	41
24	16
25	21
26	43
27	47
28	10
29	27
30	49
31	53
32	20
33	33
34	59
35	61
36	26
37	45
38	67
39	71
40	22
41	39
42	73
43	79
44	28
45	51
46	55
47	83
48	32
49	57
50	65
51	77
52	34
53	69
54	89
55	91
56	38
57	75
58	97
59	101
60	44
61	63
62	85
63	103
64	46
65	81
66	195
67	107
68	52
69	87
70	109
71	113
72	40
73	93
74	119

[1, 2, 3, 4, 5, 7, 9, 8, 11, 13, 15, 14, 17, 19, 23, 6, 25, 29, 31, 12, 35, 37, 41, 16, 21, 43, 47, 10, 27, 49, 53, 20, 33, 59, 61, 26, 45, 67, 71, 22, 39, 73, 79, 28, 51, 55, 83, 32, 57, 65, 77, 34, 69, 89, 91, 38, 75, 97, 101, 44, 63, 85, 103, 46, 81, 195, 107, 52, 87, 109, 113, 40, 93, 119]

cp's OEIS Frontend

A115928 Smallest number which is coprime to the last four predecessors and not occurring earlier; a(1)=1, a(2)=2, a(3)=3 & a(4)=4.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	9
8	8
9	11
10	13
11	15
12	14
13	17
14	19
15	23
16	6
17	25
18	29
19	31
20	12
21	35
22	37
23	41
24	16
25	21
26	43
27	47
28	10
29	27
30	49
31	53
32	20
33	33
34	59
35	61
36	26
37	45
38	67
39	71
40	22
41	39
42	73
43	79
44	28
45	51
46	55
47	83
48	32
49	57
50	65
51	77
52	34
53	69
54	89
55	91
56	38
57	75
58	97
59	101
60	44
61	63
62	85
63	103
64	46
65	81
66	195
67	107
68	52
69	87
70	109
71	113
72	40
73	93
74	119

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	9
8	8
9	11
10	13
11	15
12	14
13	17
14	19
15	23
16	6
17	25
18	29
19	31
20	12
21	35
22	37
23	41
24	16
25	21
26	43
27	47
28	10
29	27
30	49
31	53
32	20
33	33
34	59
35	61
36	26
37	45
38	67
39	71
40	22
41	39
42	73
43	79
44	28
45	51
46	55
47	83
48	32
49	57
50	65
51	77
52	34
53	69
54	89
55	91
56	38
57	75
58	97
59	101
60	44
61	63
62	85
63	103
64	46
65	81
66	195
67	107
68	52
69	87
70	109
71	113
72	40
73	93
74	119

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	9
8	8
9	11
10	13
11	15
12	14
13	17
14	19
15	23
16	6
17	25
18	29
19	31
20	12
21	35
22	37
23	41
24	16
25	21
26	43
27	47
28	10
29	27
30	49
31	53
32	20
33	33
34	59
35	61
36	26
37	45
38	67
39	71
40	22
41	39
42	73
43	79
44	28
45	51
46	55
47	83
48	32
49	57
50	65
51	77
52	34
53	69
54	89
55	91
56	38
57	75
58	97
59	101
60	44
61	63
62	85
63	103
64	46
65	81
66	195
67	107
68	52
69	87
70	109
71	113
72	40
73	93
74	119