A239085 - cp's OEIS frontend

A239085 The sequence S = a(1), a(2), ... is defined by a(1)=1, if d,e,f are consecutive digits then we do not have d < e > f, and S is always extended with the smallest integer not yet present in S.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	90
11	11
12	10
13	12
14	20
15	13
16	30
17	14
18	40
19	15
20	50
21	16
22	60
23	17
24	70
25	18
26	80
27	19
28	91
29	22
30	21
31	23
32	31
33	24
34	41
35	25
36	51
37	26
38	61
39	27
40	71
41	28
42	81
43	29
44	92
45	33
46	32
47	34
48	42
49	35
50	52
51	36
52	62
53	37
54	72
55	38
56	82
57	39
58	93
59	44
60	43
61	45
62	53
63	46
64	63
65	47
66	73
67	48
68	83
69	49
70	94
71	55
72	54
73	56
74	64
75	57
76	74
77	58
78	84
79	59
80	95
81	66
82	65
83	67
84	75
85	68
86	85
87	69
88	96
89	77
90	76

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

cp's OEIS Frontend

A239085 The sequence S = a(1), a(2), ... is defined by a(1)=1, if d,e,f are consecutive digits then we do not have d < e > f, and S is always extended with the smallest integer not yet present in S.

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	90
11	11
12	10
13	12
14	20
15	13
16	30
17	14
18	40
19	15
20	50
21	16
22	60
23	17
24	70
25	18
26	80
27	19
28	91
29	22
30	21
31	23
32	31
33	24
34	41
35	25
36	51
37	26
38	61
39	27
40	71
41	28
42	81
43	29
44	92
45	33
46	32
47	34
48	42
49	35
50	52
51	36
52	62
53	37
54	72
55	38
56	82
57	39
58	93
59	44
60	43
61	45
62	53
63	46
64	63
65	47
66	73
67	48
68	83
69	49
70	94
71	55
72	54
73	56
74	64
75	57
76	74
77	58
78	84
79	59
80	95
81	66
82	65
83	67
84	75
85	68
86	85
87	69
88	96
89	77
90	76

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	90
11	11
12	10
13	12
14	20
15	13
16	30
17	14
18	40
19	15
20	50
21	16
22	60
23	17
24	70
25	18
26	80
27	19
28	91
29	22
30	21
31	23
32	31
33	24
34	41
35	25
36	51
37	26
38	61
39	27
40	71
41	28
42	81
43	29
44	92
45	33
46	32
47	34
48	42
49	35
50	52
51	36
52	62
53	37
54	72
55	38
56	82
57	39
58	93
59	44
60	43
61	45
62	53
63	46
64	63
65	47
66	73
67	48
68	83
69	49
70	94
71	55
72	54
73	56
74	64
75	57
76	74
77	58
78	84
79	59
80	95
81	66
82	65
83	67
84	75
85	68
86	85
87	69
88	96
89	77
90	76

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	90
11	11
12	10
13	12
14	20
15	13
16	30
17	14
18	40
19	15
20	50
21	16
22	60
23	17
24	70
25	18
26	80
27	19
28	91
29	22
30	21
31	23
32	31
33	24
34	41
35	25
36	51
37	26
38	61
39	27
40	71
41	28
42	81
43	29
44	92
45	33
46	32
47	34
48	42
49	35
50	52
51	36
52	62
53	37
54	72
55	38
56	82
57	39
58	93
59	44
60	43
61	45
62	53
63	46
64	63
65	47
66	73
67	48
68	83
69	49
70	94
71	55
72	54
73	56
74	64
75	57
76	74
77	58
78	84
79	59
80	95
81	66
82	65
83	67
84	75
85	68
86	85
87	69
88	96
89	77
90	76