A026450 - cp's OEIS frontend

A026450 a(n) = least positive integer > a(n-1) and not a(i)*a(j)+2 for i<=1<=j<=n.

n	a(n)
1	2
2	3
3	4
4	5
5	7
6	9
7	13
8	15
9	19
10	21
11	24
12	25
13	26
14	31
15	33
16	34
17	35
18	36
19	39
20	42
21	43
22	45
23	46
24	48
25	49
26	53
27	55
28	56
29	57
30	58
31	60
32	61
33	63
34	66
35	69
36	71
37	73
38	75
39	76
40	79
41	81
42	82
43	84
44	85
45	87
46	89
47	90
48	91
49	96
50	99
51	103
52	105
53	109
54	111
55	113
56	115
57	117
58	120
59	121

[2, 3, 4, 5, 7, 9, 13, 15, 19, 21, 24, 25, 26, 31, 33, 34, 35, 36, 39, 42, 43, 45, 46, 48, 49, 53, 55, 56, 57, 58, 60, 61, 63, 66, 69, 71, 73, 75, 76, 79, 81, 82, 84, 85, 87, 89, 90, 91, 96, 99, 103, 105, 109, 111, 113, 115, 117, 120, 121]

cp's OEIS Frontend

A026450 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	2
2	3
3	4
4	5
5	7
6	9
7	13
8	15
9	19
10	21
11	24
12	25
13	26
14	31
15	33
16	34
17	35
18	36
19	39
20	42
21	43
22	45
23	46
24	48
25	49
26	53
27	55
28	56
29	57
30	58
31	60
32	61
33	63
34	66
35	69
36	71
37	73
38	75
39	76
40	79
41	81
42	82
43	84
44	85
45	87
46	89
47	90
48	91
49	96
50	99
51	103
52	105
53	109
54	111
55	113
56	115
57	117
58	120
59	121

n	a(n)
1	2
2	3
3	4
4	5
5	7
6	9
7	13
8	15
9	19
10	21
11	24
12	25
13	26
14	31
15	33
16	34
17	35
18	36
19	39
20	42
21	43
22	45
23	46
24	48
25	49
26	53
27	55
28	56
29	57
30	58
31	60
32	61
33	63
34	66
35	69
36	71
37	73
38	75
39	76
40	79
41	81
42	82
43	84
44	85
45	87
46	89
47	90
48	91
49	96
50	99
51	103
52	105
53	109
54	111
55	113
56	115
57	117
58	120
59	121

n	a(n)
1	2
2	3
3	4
4	5
5	7
6	9
7	13
8	15
9	19
10	21
11	24
12	25
13	26
14	31
15	33
16	34
17	35
18	36
19	39
20	42
21	43
22	45
23	46
24	48
25	49
26	53
27	55
28	56
29	57
30	58
31	60
32	61
33	63
34	66
35	69
36	71
37	73
38	75
39	76
40	79
41	81
42	82
43	84
44	85
45	87
46	89
47	90
48	91
49	96
50	99
51	103
52	105
53	109
54	111
55	113
56	115
57	117
58	120
59	121