A342356 - cp's OEIS frontend

A342356 a(1) = 1, a(2) = 10; for n > 2, a(n) is the least positive integer not occurring earlier that shares both a factor and a digit with a(n-1).

n	a(n)
1	1
2	10
3	12
4	2
5	20
6	22
7	24
8	4
9	14
10	16
11	6
12	26
13	28
14	8
15	18
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	21
31	27
32	57
33	45
34	50
35	52
36	54
37	44
38	46
39	56
40	58
41	68
42	60
43	62
44	64
45	66
46	63
47	39
48	9
49	69
50	90
51	70
52	7
53	77
54	147
55	49
56	84
57	74
58	37
59	333
60	93
61	31
62	124
63	72
64	75
65	51
66	17
67	102
68	80
69	78
70	76
71	86
72	82
73	88
74	98
75	91

[1, 10, 12, 2, 20, 22, 24, 4, 14, 16, 6, 26, 28, 8, 18, 15, 5, 25, 35, 30, 3, 33, 36, 32, 34, 38, 48, 40, 42, 21, 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, 80, 78, 76, 86, 82, 88, 98, 91]

cp's OEIS Frontend

A342356 a(1) = 1, a(2) = 10; for n > 2, a(n) is the least positive integer not occurring earlier that shares both a factor and a digit with a(n-1).

Table of values

List of values

n	a(n)
1	1
2	10
3	12
4	2
5	20
6	22
7	24
8	4
9	14
10	16
11	6
12	26
13	28
14	8
15	18
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	21
31	27
32	57
33	45
34	50
35	52
36	54
37	44
38	46
39	56
40	58
41	68
42	60
43	62
44	64
45	66
46	63
47	39
48	9
49	69
50	90
51	70
52	7
53	77
54	147
55	49
56	84
57	74
58	37
59	333
60	93
61	31
62	124
63	72
64	75
65	51
66	17
67	102
68	80
69	78
70	76
71	86
72	82
73	88
74	98
75	91

n	a(n)
1	1
2	10
3	12
4	2
5	20
6	22
7	24
8	4
9	14
10	16
11	6
12	26
13	28
14	8
15	18
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	21
31	27
32	57
33	45
34	50
35	52
36	54
37	44
38	46
39	56
40	58
41	68
42	60
43	62
44	64
45	66
46	63
47	39
48	9
49	69
50	90
51	70
52	7
53	77
54	147
55	49
56	84
57	74
58	37
59	333
60	93
61	31
62	124
63	72
64	75
65	51
66	17
67	102
68	80
69	78
70	76
71	86
72	82
73	88
74	98
75	91

n	a(n)
1	1
2	10
3	12
4	2
5	20
6	22
7	24
8	4
9	14
10	16
11	6
12	26
13	28
14	8
15	18
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	21
31	27
32	57
33	45
34	50
35	52
36	54
37	44
38	46
39	56
40	58
41	68
42	60
43	62
44	64
45	66
46	63
47	39
48	9
49	69
50	90
51	70
52	7
53	77
54	147
55	49
56	84
57	74
58	37
59	333
60	93
61	31
62	124
63	72
64	75
65	51
66	17
67	102
68	80
69	78
70	76
71	86
72	82
73	88
74	98
75	91