A382621 - cp's OEIS frontend

A382621 Lexicographically earliest sequence of distinct positive integers such that if a digit d in the digit stream (ignoring commas) is even, the previous digit is > d.

n	a(n)
1	1
2	3
3	2
4	5
5	4
6	7
7	6
8	9
9	8
10	10
11	11
12	13
13	15
14	17
15	19
16	20
17	30
18	31
19	32
20	33
21	21
22	35
23	23
24	25
25	27
26	29
27	37
28	39
29	40
30	50
31	51
32	52
33	53
34	54
35	55
36	41
37	57
38	42
39	59
40	43
41	70
42	71
43	72
44	73
45	74
46	75
47	45
48	47
49	49
50	60
51	76
52	77
53	61
54	79
55	62
56	90
57	91
58	92
59	93
60	94
61	95
62	96
63	97
64	63
65	98
66	64
67	99
68	65
69	101
70	103

[1, 3, 2, 5, 4, 7, 6, 9, 8, 10, 11, 13, 15, 17, 19, 20, 30, 31, 32, 33, 21, 35, 23, 25, 27, 29, 37, 39, 40, 50, 51, 52, 53, 54, 55, 41, 57, 42, 59, 43, 70, 71, 72, 73, 74, 75, 45, 47, 49, 60, 76, 77, 61, 79, 62, 90, 91, 92, 93, 94, 95, 96, 97, 63, 98, 64, 99, 65, 101, 103]

cp's OEIS Frontend

A382621 Lexicographically earliest sequence of distinct positive integers such that if a digit d in the digit stream (ignoring commas) is even, the previous digit is > d.

Table of values

List of values

n	a(n)
1	1
2	3
3	2
4	5
5	4
6	7
7	6
8	9
9	8
10	10
11	11
12	13
13	15
14	17
15	19
16	20
17	30
18	31
19	32
20	33
21	21
22	35
23	23
24	25
25	27
26	29
27	37
28	39
29	40
30	50
31	51
32	52
33	53
34	54
35	55
36	41
37	57
38	42
39	59
40	43
41	70
42	71
43	72
44	73
45	74
46	75
47	45
48	47
49	49
50	60
51	76
52	77
53	61
54	79
55	62
56	90
57	91
58	92
59	93
60	94
61	95
62	96
63	97
64	63
65	98
66	64
67	99
68	65
69	101
70	103

n	a(n)
1	1
2	3
3	2
4	5
5	4
6	7
7	6
8	9
9	8
10	10
11	11
12	13
13	15
14	17
15	19
16	20
17	30
18	31
19	32
20	33
21	21
22	35
23	23
24	25
25	27
26	29
27	37
28	39
29	40
30	50
31	51
32	52
33	53
34	54
35	55
36	41
37	57
38	42
39	59
40	43
41	70
42	71
43	72
44	73
45	74
46	75
47	45
48	47
49	49
50	60
51	76
52	77
53	61
54	79
55	62
56	90
57	91
58	92
59	93
60	94
61	95
62	96
63	97
64	63
65	98
66	64
67	99
68	65
69	101
70	103

n	a(n)
1	1
2	3
3	2
4	5
5	4
6	7
7	6
8	9
9	8
10	10
11	11
12	13
13	15
14	17
15	19
16	20
17	30
18	31
19	32
20	33
21	21
22	35
23	23
24	25
25	27
26	29
27	37
28	39
29	40
30	50
31	51
32	52
33	53
34	54
35	55
36	41
37	57
38	42
39	59
40	43
41	70
42	71
43	72
44	73
45	74
46	75
47	45
48	47
49	49
50	60
51	76
52	77
53	61
54	79
55	62
56	90
57	91
58	92
59	93
60	94
61	95
62	96
63	97
64	63
65	98
66	64
67	99
68	65
69	101
70	103