A307153 - cp's OEIS frontend

A307153 Sequence gives pair of terms giving the numbers of previous even digits and previous odd digits; a(0)=0.

n	a(n)
0	0
1	1
2	1
3	1
4	3
5	1
6	5
7	1
8	7
9	1
10	9
11	1
12	11
13	1
14	14
15	2
16	15
17	3
18	18
19	4
20	19
21	5
22	22
23	7
24	23
25	8
26	24
27	11
28	26
29	13
30	28
31	15
32	30
33	16
34	32
35	18
36	34
37	20
38	35
39	22
40	37
41	24
42	39
43	26
44	41
45	29
46	43
47	31
48	46
49	33
50	48
51	35
52	50
53	36
54	52
55	38
56	54
57	40
58	55
59	42
60	57
61	44
62	59
63	46
64	61
65	49
66	63
67	51
68	66
69	53
70	68

[0, 1, 1, 1, 3, 1, 5, 1, 7, 1, 9, 1, 11, 1, 14, 2, 15, 3, 18, 4, 19, 5, 22, 7, 23, 8, 24, 11, 26, 13, 28, 15, 30, 16, 32, 18, 34, 20, 35, 22, 37, 24, 39, 26, 41, 29, 43, 31, 46, 33, 48, 35, 50, 36, 52, 38, 54, 40, 55, 42, 57, 44, 59, 46, 61, 49, 63, 51, 66, 53, 68]

cp's OEIS Frontend

A307153 Sequence gives pair of terms giving the numbers of previous even digits and previous odd digits; a(0)=0.

Table of values

List of values

n	a(n)
0	0
1	1
2	1
3	1
4	3
5	1
6	5
7	1
8	7
9	1
10	9
11	1
12	11
13	1
14	14
15	2
16	15
17	3
18	18
19	4
20	19
21	5
22	22
23	7
24	23
25	8
26	24
27	11
28	26
29	13
30	28
31	15
32	30
33	16
34	32
35	18
36	34
37	20
38	35
39	22
40	37
41	24
42	39
43	26
44	41
45	29
46	43
47	31
48	46
49	33
50	48
51	35
52	50
53	36
54	52
55	38
56	54
57	40
58	55
59	42
60	57
61	44
62	59
63	46
64	61
65	49
66	63
67	51
68	66
69	53
70	68

n	a(n)
0	0
1	1
2	1
3	1
4	3
5	1
6	5
7	1
8	7
9	1
10	9
11	1
12	11
13	1
14	14
15	2
16	15
17	3
18	18
19	4
20	19
21	5
22	22
23	7
24	23
25	8
26	24
27	11
28	26
29	13
30	28
31	15
32	30
33	16
34	32
35	18
36	34
37	20
38	35
39	22
40	37
41	24
42	39
43	26
44	41
45	29
46	43
47	31
48	46
49	33
50	48
51	35
52	50
53	36
54	52
55	38
56	54
57	40
58	55
59	42
60	57
61	44
62	59
63	46
64	61
65	49
66	63
67	51
68	66
69	53
70	68

n	a(n)
0	0
1	1
2	1
3	1
4	3
5	1
6	5
7	1
8	7
9	1
10	9
11	1
12	11
13	1
14	14
15	2
16	15
17	3
18	18
19	4
20	19
21	5
22	22
23	7
24	23
25	8
26	24
27	11
28	26
29	13
30	28
31	15
32	30
33	16
34	32
35	18
36	34
37	20
38	35
39	22
40	37
41	24
42	39
43	26
44	41
45	29
46	43
47	31
48	46
49	33
50	48
51	35
52	50
53	36
54	52
55	38
56	54
57	40
58	55
59	42
60	57
61	44
62	59
63	46
64	61
65	49
66	63
67	51
68	66
69	53
70	68