A342367 - cp's OEIS frontend

A342367 a(1) = 1; for n > 1, a(n) is the least positive integer not occurring earlier that shares a digit but not a factor > 1 with a(n-1).

n	a(n)
1	1
2	10
3	11
4	12
5	13
6	3
7	23
8	2
9	21
10	16
11	15
12	14
13	17
14	7
15	27
16	20
17	29
18	9
19	19
20	18
21	31
22	30
23	37
24	32
25	25
26	22
27	123
28	26
29	61
30	6
31	65
32	36
33	35
34	33
35	34
36	39
37	38
38	43
39	4
40	41
41	24
42	47
43	40
44	49
45	44
46	45
47	46
48	63
49	53
50	5
51	51
52	50
53	57
54	52
55	55
56	54
57	59
58	56
59	67
60	60
61	101
62	70
63	71
64	72
65	73
66	74
67	75
68	58
69	81
70	8
71	83
72	28
73	85
74	48

[1, 10, 11, 12, 13, 3, 23, 2, 21, 16, 15, 14, 17, 7, 27, 20, 29, 9, 19, 18, 31, 30, 37, 32, 25, 22, 123, 26, 61, 6, 65, 36, 35, 33, 34, 39, 38, 43, 4, 41, 24, 47, 40, 49, 44, 45, 46, 63, 53, 5, 51, 50, 57, 52, 55, 54, 59, 56, 67, 60, 101, 70, 71, 72, 73, 74, 75, 58, 81, 8, 83, 28, 85, 48]

cp's OEIS Frontend

A342367 a(1) = 1; for n > 1, a(n) is the least positive integer not occurring earlier that shares a digit but not a factor > 1 with a(n-1).

Table of values

List of values

n	a(n)
1	1
2	10
3	11
4	12
5	13
6	3
7	23
8	2
9	21
10	16
11	15
12	14
13	17
14	7
15	27
16	20
17	29
18	9
19	19
20	18
21	31
22	30
23	37
24	32
25	25
26	22
27	123
28	26
29	61
30	6
31	65
32	36
33	35
34	33
35	34
36	39
37	38
38	43
39	4
40	41
41	24
42	47
43	40
44	49
45	44
46	45
47	46
48	63
49	53
50	5
51	51
52	50
53	57
54	52
55	55
56	54
57	59
58	56
59	67
60	60
61	101
62	70
63	71
64	72
65	73
66	74
67	75
68	58
69	81
70	8
71	83
72	28
73	85
74	48

n	a(n)
1	1
2	10
3	11
4	12
5	13
6	3
7	23
8	2
9	21
10	16
11	15
12	14
13	17
14	7
15	27
16	20
17	29
18	9
19	19
20	18
21	31
22	30
23	37
24	32
25	25
26	22
27	123
28	26
29	61
30	6
31	65
32	36
33	35
34	33
35	34
36	39
37	38
38	43
39	4
40	41
41	24
42	47
43	40
44	49
45	44
46	45
47	46
48	63
49	53
50	5
51	51
52	50
53	57
54	52
55	55
56	54
57	59
58	56
59	67
60	60
61	101
62	70
63	71
64	72
65	73
66	74
67	75
68	58
69	81
70	8
71	83
72	28
73	85
74	48

n	a(n)
1	1
2	10
3	11
4	12
5	13
6	3
7	23
8	2
9	21
10	16
11	15
12	14
13	17
14	7
15	27
16	20
17	29
18	9
19	19
20	18
21	31
22	30
23	37
24	32
25	25
26	22
27	123
28	26
29	61
30	6
31	65
32	36
33	35
34	33
35	34
36	39
37	38
38	43
39	4
40	41
41	24
42	47
43	40
44	49
45	44
46	45
47	46
48	63
49	53
50	5
51	51
52	50
53	57
54	52
55	55
56	54
57	59
58	56
59	67
60	60
61	101
62	70
63	71
64	72
65	73
66	74
67	75
68	58
69	81
70	8
71	83
72	28
73	85
74	48