A026448 - cp's OEIS frontend

A026448 a(n) = least positive integer > a(n-1) and not a(i)*a(j)+2 for i<=1<=j<=n.

n	a(n)
1	1
2	2
3	5
4	8
5	9
6	13
7	14
8	17
9	21
10	22
11	25
12	26
13	29
14	32
15	33
16	37
17	38
18	41
19	45
20	48
21	49
22	53
23	56
24	57
25	61
26	62
27	65
28	69
29	70
30	73
31	77
32	80
33	81
34	85
35	86
36	89
37	90
38	93
39	94
40	97
41	101
42	102
43	105
44	109
45	110
46	113
47	117
48	118
49	121
50	122
51	125
52	129
53	130
54	133
55	134
56	137
57	141

[1, 2, 5, 8, 9, 13, 14, 17, 21, 22, 25, 26, 29, 32, 33, 37, 38, 41, 45, 48, 49, 53, 56, 57, 61, 62, 65, 69, 70, 73, 77, 80, 81, 85, 86, 89, 90, 93, 94, 97, 101, 102, 105, 109, 110, 113, 117, 118, 121, 122, 125, 129, 130, 133, 134, 137, 141]

cp's OEIS Frontend

A026448 a(n) = least positive integer > a(n-1) and not a(i)*a(j)+2 for i<=1<=j<=n.

Table of values

List of values

n	a(n)
1	1
2	2
3	5
4	8
5	9
6	13
7	14
8	17
9	21
10	22
11	25
12	26
13	29
14	32
15	33
16	37
17	38
18	41
19	45
20	48
21	49
22	53
23	56
24	57
25	61
26	62
27	65
28	69
29	70
30	73
31	77
32	80
33	81
34	85
35	86
36	89
37	90
38	93
39	94
40	97
41	101
42	102
43	105
44	109
45	110
46	113
47	117
48	118
49	121
50	122
51	125
52	129
53	130
54	133
55	134
56	137
57	141

n	a(n)
1	1
2	2
3	5
4	8
5	9
6	13
7	14
8	17
9	21
10	22
11	25
12	26
13	29
14	32
15	33
16	37
17	38
18	41
19	45
20	48
21	49
22	53
23	56
24	57
25	61
26	62
27	65
28	69
29	70
30	73
31	77
32	80
33	81
34	85
35	86
36	89
37	90
38	93
39	94
40	97
41	101
42	102
43	105
44	109
45	110
46	113
47	117
48	118
49	121
50	122
51	125
52	129
53	130
54	133
55	134
56	137
57	141

n	a(n)
1	1
2	2
3	5
4	8
5	9
6	13
7	14
8	17
9	21
10	22
11	25
12	26
13	29
14	32
15	33
16	37
17	38
18	41
19	45
20	48
21	49
22	53
23	56
24	57
25	61
26	62
27	65
28	69
29	70
30	73
31	77
32	80
33	81
34	85
35	86
36	89
37	90
38	93
39	94
40	97
41	101
42	102
43	105
44	109
45	110
46	113
47	117
48	118
49	121
50	122
51	125
52	129
53	130
54	133
55	134
56	137
57	141