A239089 - cp's OEIS frontend

A239089 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	12
11	13
12	14
13	15
14	16
15	17
16	18
17	19
18	23
19	24
20	25
21	26
22	27
23	28
24	29
25	34
26	35
27	36
28	37
29	38
30	39
31	45
32	46
33	47
34	48
35	49
36	56
37	57
38	58
39	59
40	67
41	68
42	69
43	78
44	79
45	89
46	90
47	10
48	11
49	20
50	21
51	22
52	30
53	31
54	32
55	33
56	40
57	41
58	42
59	43
60	44
61	50

[1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 14, 15, 16, 17, 18, 19, 23, 24, 25, 26, 27, 28, 29, 34, 35, 36, 37, 38, 39, 45, 46, 47, 48, 49, 56, 57, 58, 59, 67, 68, 69, 78, 79, 89, 90, 10, 11, 20, 21, 22, 30, 31, 32, 33, 40, 41, 42, 43, 44, 50]

cp's OEIS Frontend

A239089 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	12
11	13
12	14
13	15
14	16
15	17
16	18
17	19
18	23
19	24
20	25
21	26
22	27
23	28
24	29
25	34
26	35
27	36
28	37
29	38
30	39
31	45
32	46
33	47
34	48
35	49
36	56
37	57
38	58
39	59
40	67
41	68
42	69
43	78
44	79
45	89
46	90
47	10
48	11
49	20
50	21
51	22
52	30
53	31
54	32
55	33
56	40
57	41
58	42
59	43
60	44
61	50

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	12
11	13
12	14
13	15
14	16
15	17
16	18
17	19
18	23
19	24
20	25
21	26
22	27
23	28
24	29
25	34
26	35
27	36
28	37
29	38
30	39
31	45
32	46
33	47
34	48
35	49
36	56
37	57
38	58
39	59
40	67
41	68
42	69
43	78
44	79
45	89
46	90
47	10
48	11
49	20
50	21
51	22
52	30
53	31
54	32
55	33
56	40
57	41
58	42
59	43
60	44
61	50

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	12
11	13
12	14
13	15
14	16
15	17
16	18
17	19
18	23
19	24
20	25
21	26
22	27
23	28
24	29
25	34
26	35
27	36
28	37
29	38
30	39
31	45
32	46
33	47
34	48
35	49
36	56
37	57
38	58
39	59
40	67
41	68
42	69
43	78
44	79
45	89
46	90
47	10
48	11
49	20
50	21
51	22
52	30
53	31
54	32
55	33
56	40
57	41
58	42
59	43
60	44
61	50