A030141 - cp's OEIS frontend

A030141 Numbers in which parity of the decimal digits alternates.

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	12
13	14
14	16
15	18
16	21
17	23
18	25
19	27
20	29
21	30
22	32
23	34
24	36
25	38
26	41
27	43
28	45
29	47
30	49
31	50
32	52
33	54
34	56
35	58
36	61
37	63
38	65
39	67
40	69
41	70
42	72
43	74
44	76
45	78
46	81
47	83
48	85
49	87
50	89
51	90
52	92
53	94
54	96
55	98
56	101
57	103
58	105
59	107
60	109
61	121
62	123
63	125
64	127
65	129

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 21, 23, 25, 27, 29, 30, 32, 34, 36, 38, 41, 43, 45, 47, 49, 50, 52, 54, 56, 58, 61, 63, 65, 67, 69, 70, 72, 74, 76, 78, 81, 83, 85, 87, 89, 90, 92, 94, 96, 98, 101, 103, 105, 107, 109, 121, 123, 125, 127, 129]

cp's OEIS Frontend

A030141 Numbers in which parity of the decimal digits alternates.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	12
13	14
14	16
15	18
16	21
17	23
18	25
19	27
20	29
21	30
22	32
23	34
24	36
25	38
26	41
27	43
28	45
29	47
30	49
31	50
32	52
33	54
34	56
35	58
36	61
37	63
38	65
39	67
40	69
41	70
42	72
43	74
44	76
45	78
46	81
47	83
48	85
49	87
50	89
51	90
52	92
53	94
54	96
55	98
56	101
57	103
58	105
59	107
60	109
61	121
62	123
63	125
64	127
65	129

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	12
13	14
14	16
15	18
16	21
17	23
18	25
19	27
20	29
21	30
22	32
23	34
24	36
25	38
26	41
27	43
28	45
29	47
30	49
31	50
32	52
33	54
34	56
35	58
36	61
37	63
38	65
39	67
40	69
41	70
42	72
43	74
44	76
45	78
46	81
47	83
48	85
49	87
50	89
51	90
52	92
53	94
54	96
55	98
56	101
57	103
58	105
59	107
60	109
61	121
62	123
63	125
64	127
65	129

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	12
13	14
14	16
15	18
16	21
17	23
18	25
19	27
20	29
21	30
22	32
23	34
24	36
25	38
26	41
27	43
28	45
29	47
30	49
31	50
32	52
33	54
34	56
35	58
36	61
37	63
38	65
39	67
40	69
41	70
42	72
43	74
44	76
45	78
46	81
47	83
48	85
49	87
50	89
51	90
52	92
53	94
54	96
55	98
56	101
57	103
58	105
59	107
60	109
61	121
62	123
63	125
64	127
65	129