A239136 - cp's OEIS frontend

A239136 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	10
4	3
5	11
6	101
7	102
8	12
9	13
10	14
11	4
12	15
13	5
14	16
15	6
16	17
17	7
18	18
19	8
20	19
21	9
22	20
23	21
24	22
25	103
26	23
27	24
28	25
29	26
30	27
31	28
32	29
33	30
34	31
35	32
36	33
37	104
38	34
39	35
40	36
41	37
42	38
43	39
44	40
45	41
46	42
47	43
48	44
49	105
50	45
51	46
52	47
53	48
54	49
55	50
56	51
57	52
58	53
59	54
60	55
61	106
62	56
63	57
64	58
65	59
66	60

[1, 2, 10, 3, 11, 101, 102, 12, 13, 14, 4, 15, 5, 16, 6, 17, 7, 18, 8, 19, 9, 20, 21, 22, 103, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 104, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 105, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 106, 56, 57, 58, 59, 60]

cp's OEIS Frontend

A239136 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	10
4	3
5	11
6	101
7	102
8	12
9	13
10	14
11	4
12	15
13	5
14	16
15	6
16	17
17	7
18	18
19	8
20	19
21	9
22	20
23	21
24	22
25	103
26	23
27	24
28	25
29	26
30	27
31	28
32	29
33	30
34	31
35	32
36	33
37	104
38	34
39	35
40	36
41	37
42	38
43	39
44	40
45	41
46	42
47	43
48	44
49	105
50	45
51	46
52	47
53	48
54	49
55	50
56	51
57	52
58	53
59	54
60	55
61	106
62	56
63	57
64	58
65	59
66	60

n	a(n)
1	1
2	2
3	10
4	3
5	11
6	101
7	102
8	12
9	13
10	14
11	4
12	15
13	5
14	16
15	6
16	17
17	7
18	18
19	8
20	19
21	9
22	20
23	21
24	22
25	103
26	23
27	24
28	25
29	26
30	27
31	28
32	29
33	30
34	31
35	32
36	33
37	104
38	34
39	35
40	36
41	37
42	38
43	39
44	40
45	41
46	42
47	43
48	44
49	105
50	45
51	46
52	47
53	48
54	49
55	50
56	51
57	52
58	53
59	54
60	55
61	106
62	56
63	57
64	58
65	59
66	60

n	a(n)
1	1
2	2
3	10
4	3
5	11
6	101
7	102
8	12
9	13
10	14
11	4
12	15
13	5
14	16
15	6
16	17
17	7
18	18
19	8
20	19
21	9
22	20
23	21
24	22
25	103
26	23
27	24
28	25
29	26
30	27
31	28
32	29
33	30
34	31
35	32
36	33
37	104
38	34
39	35
40	36
41	37
42	38
43	39
44	40
45	41
46	42
47	43
48	44
49	105
50	45
51	46
52	47
53	48
54	49
55	50
56	51
57	52
58	53
59	54
60	55
61	106
62	56
63	57
64	58
65	59
66	60