A026464 - cp's OEIS frontend

A026464 a(n) = least positive integer > a(n-1) and not a(i)*a(j)-2 for 1<=i<=j<=n.

n	a(n)
1	3
2	4
3	5
4	6
5	8
6	9
7	11
8	12
9	15
10	17
11	19
12	20
13	21
14	24
15	26
16	27
17	29
18	32
19	33
20	35
21	36
22	37
23	39
24	40
25	41
26	44
27	45
28	47
29	48
30	50
31	51
32	54
33	56
34	57
35	59
36	60
37	63
38	65
39	67
40	68
41	69
42	71
43	72
44	75
45	77
46	80
47	81
48	84
49	87
50	89
51	90
52	91
53	92
54	95
55	96
56	99
57	101
58	104
59	105
60	107

[3, 4, 5, 6, 8, 9, 11, 12, 15, 17, 19, 20, 21, 24, 26, 27, 29, 32, 33, 35, 36, 37, 39, 40, 41, 44, 45, 47, 48, 50, 51, 54, 56, 57, 59, 60, 63, 65, 67, 68, 69, 71, 72, 75, 77, 80, 81, 84, 87, 89, 90, 91, 92, 95, 96, 99, 101, 104, 105, 107]

cp's OEIS Frontend

A026464 a(n) = least positive integer > a(n-1) and not a(i)*a(j)-2 for 1<=i<=j<=n.

Table of values

List of values

n	a(n)
1	3
2	4
3	5
4	6
5	8
6	9
7	11
8	12
9	15
10	17
11	19
12	20
13	21
14	24
15	26
16	27
17	29
18	32
19	33
20	35
21	36
22	37
23	39
24	40
25	41
26	44
27	45
28	47
29	48
30	50
31	51
32	54
33	56
34	57
35	59
36	60
37	63
38	65
39	67
40	68
41	69
42	71
43	72
44	75
45	77
46	80
47	81
48	84
49	87
50	89
51	90
52	91
53	92
54	95
55	96
56	99
57	101
58	104
59	105
60	107

n	a(n)
1	3
2	4
3	5
4	6
5	8
6	9
7	11
8	12
9	15
10	17
11	19
12	20
13	21
14	24
15	26
16	27
17	29
18	32
19	33
20	35
21	36
22	37
23	39
24	40
25	41
26	44
27	45
28	47
29	48
30	50
31	51
32	54
33	56
34	57
35	59
36	60
37	63
38	65
39	67
40	68
41	69
42	71
43	72
44	75
45	77
46	80
47	81
48	84
49	87
50	89
51	90
52	91
53	92
54	95
55	96
56	99
57	101
58	104
59	105
60	107

n	a(n)
1	3
2	4
3	5
4	6
5	8
6	9
7	11
8	12
9	15
10	17
11	19
12	20
13	21
14	24
15	26
16	27
17	29
18	32
19	33
20	35
21	36
22	37
23	39
24	40
25	41
26	44
27	45
28	47
29	48
30	50
31	51
32	54
33	56
34	57
35	59
36	60
37	63
38	65
39	67
40	68
41	69
42	71
43	72
44	75
45	77
46	80
47	81
48	84
49	87
50	89
51	90
52	91
53	92
54	95
55	96
56	99
57	101
58	104
59	105
60	107