A245281 - cp's OEIS frontend

A245281 a(1)=2; for n > 1, a(n) is the least positive integer not occurring earlier that shares a digit and a factor with a(n-1).

n	a(n)
1	2
2	12
3	10
4	14
5	4
6	24
7	20
8	22
9	26
10	6
11	16
12	18
13	8
14	28
15	21
16	15
17	5
18	25
19	35
20	30
21	3
22	33
23	36
24	32
25	34
26	38
27	48
28	40
29	42
30	27
31	57
32	45
33	50
34	52
35	54
36	44
37	46
38	56
39	58
40	68
41	60
42	62
43	64
44	66
45	63
46	39
47	9
48	69
49	90
50	70
51	7
52	77
53	147
54	49
55	84
56	74
57	37
58	333
59	93
60	31
61	124
62	72
63	75
64	51
65	17
66	102

[2, 12, 10, 14, 4, 24, 20, 22, 26, 6, 16, 18, 8, 28, 21, 15, 5, 25, 35, 30, 3, 33, 36, 32, 34, 38, 48, 40, 42, 27, 57, 45, 50, 52, 54, 44, 46, 56, 58, 68, 60, 62, 64, 66, 63, 39, 9, 69, 90, 70, 7, 77, 147, 49, 84, 74, 37, 333, 93, 31, 124, 72, 75, 51, 17, 102]

cp's OEIS Frontend

A245281 a(1)=2; for n > 1, a(n) is the least positive integer not occurring earlier that shares a digit and a factor with a(n-1).

Table of values

List of values

n	a(n)
1	2
2	12
3	10
4	14
5	4
6	24
7	20
8	22
9	26
10	6
11	16
12	18
13	8
14	28
15	21
16	15
17	5
18	25
19	35
20	30
21	3
22	33
23	36
24	32
25	34
26	38
27	48
28	40
29	42
30	27
31	57
32	45
33	50
34	52
35	54
36	44
37	46
38	56
39	58
40	68
41	60
42	62
43	64
44	66
45	63
46	39
47	9
48	69
49	90
50	70
51	7
52	77
53	147
54	49
55	84
56	74
57	37
58	333
59	93
60	31
61	124
62	72
63	75
64	51
65	17
66	102

n	a(n)
1	2
2	12
3	10
4	14
5	4
6	24
7	20
8	22
9	26
10	6
11	16
12	18
13	8
14	28
15	21
16	15
17	5
18	25
19	35
20	30
21	3
22	33
23	36
24	32
25	34
26	38
27	48
28	40
29	42
30	27
31	57
32	45
33	50
34	52
35	54
36	44
37	46
38	56
39	58
40	68
41	60
42	62
43	64
44	66
45	63
46	39
47	9
48	69
49	90
50	70
51	7
52	77
53	147
54	49
55	84
56	74
57	37
58	333
59	93
60	31
61	124
62	72
63	75
64	51
65	17
66	102

n	a(n)
1	2
2	12
3	10
4	14
5	4
6	24
7	20
8	22
9	26
10	6
11	16
12	18
13	8
14	28
15	21
16	15
17	5
18	25
19	35
20	30
21	3
22	33
23	36
24	32
25	34
26	38
27	48
28	40
29	42
30	27
31	57
32	45
33	50
34	52
35	54
36	44
37	46
38	56
39	58
40	68
41	60
42	62
43	64
44	66
45	63
46	39
47	9
48	69
49	90
50	70
51	7
52	77
53	147
54	49
55	84
56	74
57	37
58	333
59	93
60	31
61	124
62	72
63	75
64	51
65	17
66	102