A239088 - cp's OEIS frontend

A239088 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	11
11	10
12	12
13	13
14	14
15	15
16	16
17	17
18	18
19	19
20	22
21	20
22	21
23	23
24	24
25	25
26	26
27	27
28	28
29	29
30	33
31	30
32	31
33	32
34	34
35	35
36	36
37	37
38	38
39	39
40	44
41	40
42	41
43	42
44	43
45	45
46	46
47	47
48	38
49	49
50	55
51	50
52	51
53	52
54	53
55	54
56	56
57	57
58	58
59	59
60	66
61	60
62	61
63	62
64	63
65	64
66	65
67	67
68	68
69	69
70	77
71	70

[1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 10, 12, 13, 14, 15, 16, 17, 18, 19, 22, 20, 21, 23, 24, 25, 26, 27, 28, 29, 33, 30, 31, 32, 34, 35, 36, 37, 38, 39, 44, 40, 41, 42, 43, 45, 46, 47, 38, 49, 55, 50, 51, 52, 53, 54, 56, 57, 58, 59, 66, 60, 61, 62, 63, 64, 65, 67, 68, 69, 77, 70]

cp's OEIS Frontend

A239088 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	11
11	10
12	12
13	13
14	14
15	15
16	16
17	17
18	18
19	19
20	22
21	20
22	21
23	23
24	24
25	25
26	26
27	27
28	28
29	29
30	33
31	30
32	31
33	32
34	34
35	35
36	36
37	37
38	38
39	39
40	44
41	40
42	41
43	42
44	43
45	45
46	46
47	47
48	38
49	49
50	55
51	50
52	51
53	52
54	53
55	54
56	56
57	57
58	58
59	59
60	66
61	60
62	61
63	62
64	63
65	64
66	65
67	67
68	68
69	69
70	77
71	70

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

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