A026427 - cp's OEIS frontend

A026427 a(n) = least positive integer > a(n-1) and not equal to a(i)*a(j) for 1<=i<=j<=n.

n	a(n)
1	3
2	4
3	5
4	6
5	7
6	8
7	10
8	11
9	13
10	14
11	17
12	19
13	22
14	23
15	26
16	27
17	29
18	31
19	34
20	37
21	38
22	41
23	43
24	45
25	46
26	47
27	53
28	54
29	58
30	59
31	61
32	62
33	63
34	67
35	71
36	72
37	73
38	74
39	75
40	79
41	82
42	83
43	86
44	89
45	90
46	94
47	96
48	97
49	99
50	101
51	103
52	105
53	106
54	107
55	109
56	113
57	117
58	118
59	120
60	122
61	125
62	126
63	127
64	128
65	131
66	134

[3, 4, 5, 6, 7, 8, 10, 11, 13, 14, 17, 19, 22, 23, 26, 27, 29, 31, 34, 37, 38, 41, 43, 45, 46, 47, 53, 54, 58, 59, 61, 62, 63, 67, 71, 72, 73, 74, 75, 79, 82, 83, 86, 89, 90, 94, 96, 97, 99, 101, 103, 105, 106, 107, 109, 113, 117, 118, 120, 122, 125, 126, 127, 128, 131, 134]

cp's OEIS Frontend

A026427 a(n) = least positive integer > a(n-1) and not equal to a(i)*a(j) for 1<=i<=j<=n.

Table of values

List of values

n	a(n)
1	3
2	4
3	5
4	6
5	7
6	8
7	10
8	11
9	13
10	14
11	17
12	19
13	22
14	23
15	26
16	27
17	29
18	31
19	34
20	37
21	38
22	41
23	43
24	45
25	46
26	47
27	53
28	54
29	58
30	59
31	61
32	62
33	63
34	67
35	71
36	72
37	73
38	74
39	75
40	79
41	82
42	83
43	86
44	89
45	90
46	94
47	96
48	97
49	99
50	101
51	103
52	105
53	106
54	107
55	109
56	113
57	117
58	118
59	120
60	122
61	125
62	126
63	127
64	128
65	131
66	134

n	a(n)
1	3
2	4
3	5
4	6
5	7
6	8
7	10
8	11
9	13
10	14
11	17
12	19
13	22
14	23
15	26
16	27
17	29
18	31
19	34
20	37
21	38
22	41
23	43
24	45
25	46
26	47
27	53
28	54
29	58
30	59
31	61
32	62
33	63
34	67
35	71
36	72
37	73
38	74
39	75
40	79
41	82
42	83
43	86
44	89
45	90
46	94
47	96
48	97
49	99
50	101
51	103
52	105
53	106
54	107
55	109
56	113
57	117
58	118
59	120
60	122
61	125
62	126
63	127
64	128
65	131
66	134

n	a(n)
1	3
2	4
3	5
4	6
5	7
6	8
7	10
8	11
9	13
10	14
11	17
12	19
13	22
14	23
15	26
16	27
17	29
18	31
19	34
20	37
21	38
22	41
23	43
24	45
25	46
26	47
27	53
28	54
29	58
30	59
31	61
32	62
33	63
34	67
35	71
36	72
37	73
38	74
39	75
40	79
41	82
42	83
43	86
44	89
45	90
46	94
47	96
48	97
49	99
50	101
51	103
52	105
53	106
54	107
55	109
56	113
57	117
58	118
59	120
60	122
61	125
62	126
63	127
64	128
65	131
66	134