A055256 - cp's OEIS frontend

A055256 Number of odd digits in 3^n.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	2
7	2
8	2
9	3
10	3
11	5
12	4
13	5
14	3
15	4
16	3
17	5
18	3
19	4
20	3
21	5
22	7
23	6
24	4
25	3
26	5
27	7
28	6
29	6
30	7
31	9
32	7
33	10
34	9
35	11
36	11
37	10
38	12
39	11
40	10
41	11
42	14
43	12
44	10
45	11
46	12
47	12
48	11
49	14
50	14
51	17
52	9
53	13
54	14
55	16
56	18
57	12
58	10
59	15
60	15
61	13
62	11
63	15
64	12
65	19
66	15
67	18
68	19
69	19
70	20
71	20
72	18
73	19
74	21
75	20
76	21
77	22

[1, 1, 1, 1, 1, 1, 2, 2, 2, 3, 3, 5, 4, 5, 3, 4, 3, 5, 3, 4, 3, 5, 7, 6, 4, 3, 5, 7, 6, 6, 7, 9, 7, 10, 9, 11, 11, 10, 12, 11, 10, 11, 14, 12, 10, 11, 12, 12, 11, 14, 14, 17, 9, 13, 14, 16, 18, 12, 10, 15, 15, 13, 11, 15, 12, 19, 15, 18, 19, 19, 20, 20, 18, 19, 21, 20, 21, 22]

cp's OEIS Frontend

A055256 Number of odd digits in 3^n.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	2
7	2
8	2
9	3
10	3
11	5
12	4
13	5
14	3
15	4
16	3
17	5
18	3
19	4
20	3
21	5
22	7
23	6
24	4
25	3
26	5
27	7
28	6
29	6
30	7
31	9
32	7
33	10
34	9
35	11
36	11
37	10
38	12
39	11
40	10
41	11
42	14
43	12
44	10
45	11
46	12
47	12
48	11
49	14
50	14
51	17
52	9
53	13
54	14
55	16
56	18
57	12
58	10
59	15
60	15
61	13
62	11
63	15
64	12
65	19
66	15
67	18
68	19
69	19
70	20
71	20
72	18
73	19
74	21
75	20
76	21
77	22

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	2
7	2
8	2
9	3
10	3
11	5
12	4
13	5
14	3
15	4
16	3
17	5
18	3
19	4
20	3
21	5
22	7
23	6
24	4
25	3
26	5
27	7
28	6
29	6
30	7
31	9
32	7
33	10
34	9
35	11
36	11
37	10
38	12
39	11
40	10
41	11
42	14
43	12
44	10
45	11
46	12
47	12
48	11
49	14
50	14
51	17
52	9
53	13
54	14
55	16
56	18
57	12
58	10
59	15
60	15
61	13
62	11
63	15
64	12
65	19
66	15
67	18
68	19
69	19
70	20
71	20
72	18
73	19
74	21
75	20
76	21
77	22

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	2
7	2
8	2
9	3
10	3
11	5
12	4
13	5
14	3
15	4
16	3
17	5
18	3
19	4
20	3
21	5
22	7
23	6
24	4
25	3
26	5
27	7
28	6
29	6
30	7
31	9
32	7
33	10
34	9
35	11
36	11
37	10
38	12
39	11
40	10
41	11
42	14
43	12
44	10
45	11
46	12
47	12
48	11
49	14
50	14
51	17
52	9
53	13
54	14
55	16
56	18
57	12
58	10
59	15
60	15
61	13
62	11
63	15
64	12
65	19
66	15
67	18
68	19
69	19
70	20
71	20
72	18
73	19
74	21
75	20
76	21
77	22