A089088 - cp's OEIS frontend

A089088 a(0) = 1, a(1) = 2; for n > 1, a(n) = smallest positive number not already in sequence which has GCD > 1 with some earlier term.

n	a(n)
0	1
1	2
2	4
3	6
4	3
5	8
6	9
7	10
8	5
9	12
10	14
11	7
12	15
13	16
14	18
15	20
16	21
17	22
18	11
19	24
20	25
21	26
22	13
23	27
24	28
25	30
26	32
27	33
28	34
29	17
30	35
31	36
32	38
33	19
34	39
35	40
36	42
37	44
38	45
39	46
40	23
41	48
42	49
43	50
44	51
45	52
46	54
47	55
48	56
49	57
50	58
51	29
52	60
53	62
54	31
55	63
56	64
57	65
58	66
59	68
60	69
61	70
62	72
63	74
64	37
65	75
66	76
67	77
68	78
69	80
70	81
71	82
72	41
73	84
74	85
75	86
76	43
77	87
78	88
79	90
80	91
81	92
82	93
83	94
84	47
85	95
86	96
87	98
88	99

[1, 2, 4, 6, 3, 8, 9, 10, 5, 12, 14, 7, 15, 16, 18, 20, 21, 22, 11, 24, 25, 26, 13, 27, 28, 30, 32, 33, 34, 17, 35, 36, 38, 19, 39, 40, 42, 44, 45, 46, 23, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 29, 60, 62, 31, 63, 64, 65, 66, 68, 69, 70, 72, 74, 37, 75, 76, 77, 78, 80, 81, 82, 41, 84, 85, 86, 43, 87, 88, 90, 91, 92, 93, 94, 47, 95, 96, 98, 99]

cp's OEIS Frontend

A089088 a(0) = 1, a(1) = 2; for n > 1, a(n) = smallest positive number not already in sequence which has GCD > 1 with some earlier term.

Table of values

List of values

n	a(n)
0	1
1	2
2	4
3	6
4	3
5	8
6	9
7	10
8	5
9	12
10	14
11	7
12	15
13	16
14	18
15	20
16	21
17	22
18	11
19	24
20	25
21	26
22	13
23	27
24	28
25	30
26	32
27	33
28	34
29	17
30	35
31	36
32	38
33	19
34	39
35	40
36	42
37	44
38	45
39	46
40	23
41	48
42	49
43	50
44	51
45	52
46	54
47	55
48	56
49	57
50	58
51	29
52	60
53	62
54	31
55	63
56	64
57	65
58	66
59	68
60	69
61	70
62	72
63	74
64	37
65	75
66	76
67	77
68	78
69	80
70	81
71	82
72	41
73	84
74	85
75	86
76	43
77	87
78	88
79	90
80	91
81	92
82	93
83	94
84	47
85	95
86	96
87	98
88	99

n	a(n)
0	1
1	2
2	4
3	6
4	3
5	8
6	9
7	10
8	5
9	12
10	14
11	7
12	15
13	16
14	18
15	20
16	21
17	22
18	11
19	24
20	25
21	26
22	13
23	27
24	28
25	30
26	32
27	33
28	34
29	17
30	35
31	36
32	38
33	19
34	39
35	40
36	42
37	44
38	45
39	46
40	23
41	48
42	49
43	50
44	51
45	52
46	54
47	55
48	56
49	57
50	58
51	29
52	60
53	62
54	31
55	63
56	64
57	65
58	66
59	68
60	69
61	70
62	72
63	74
64	37
65	75
66	76
67	77
68	78
69	80
70	81
71	82
72	41
73	84
74	85
75	86
76	43
77	87
78	88
79	90
80	91
81	92
82	93
83	94
84	47
85	95
86	96
87	98
88	99

n	a(n)
0	1
1	2
2	4
3	6
4	3
5	8
6	9
7	10
8	5
9	12
10	14
11	7
12	15
13	16
14	18
15	20
16	21
17	22
18	11
19	24
20	25
21	26
22	13
23	27
24	28
25	30
26	32
27	33
28	34
29	17
30	35
31	36
32	38
33	19
34	39
35	40
36	42
37	44
38	45
39	46
40	23
41	48
42	49
43	50
44	51
45	52
46	54
47	55
48	56
49	57
50	58
51	29
52	60
53	62
54	31
55	63
56	64
57	65
58	66
59	68
60	69
61	70
62	72
63	74
64	37
65	75
66	76
67	77
68	78
69	80
70	81
71	82
72	41
73	84
74	85
75	86
76	43
77	87
78	88
79	90
80	91
81	92
82	93
83	94
84	47
85	95
86	96
87	98
88	99