A331975 - cp's OEIS frontend

A331975 Lexicographically earliest sequence of distinct positive integers such that three successive digits are always distinct.

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

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 21, 30, 12, 31, 20, 13, 24, 15, 23, 14, 25, 16, 27, 18, 26, 17, 28, 19, 32, 40, 29, 34, 50, 35, 41, 36, 42, 37, 43, 51, 38, 45, 39, 46, 52, 47, 53, 48, 54, 60, 49, 56, 70, 57, 61, 58, 62, 59, 63, 71, 64, 72, 65, 73, 67, 80, 68, 74, 69, 75, 81, 76, 82, 78, 90, 79, 83, 91, 84]

cp's OEIS Frontend

A331975 Lexicographically earliest sequence of distinct positive integers such that three successive digits are always distinct.

Table of values

List of values

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

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

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