A055255 - cp's OEIS frontend

A055255 Number of even digits in 3^n.

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	2
6	1
7	2
8	2
9	2
10	2
11	1
12	2
13	2
14	4
15	4
16	5
17	4
18	6
19	6
20	7
21	6
22	4
23	5
24	8
25	9
26	8
27	6
28	8
29	8
30	8
31	6
32	9
33	6
34	8
35	6
36	7
37	8
38	7
39	8
40	10
41	9
42	7
43	9
44	11
45	11
46	10
47	11
48	12
49	10
50	10
51	8
52	16
53	13
54	12
55	11
56	9
57	16
58	18
59	14
60	14
61	17
62	19
63	16
64	19
65	13
66	17
67	14
68	14
69	14
70	14
71	14
72	17
73	16
74	15
75	16
76	16
77	15
78	25
79	23
80	22

[0, 0, 0, 1, 1, 2, 1, 2, 2, 2, 2, 1, 2, 2, 4, 4, 5, 4, 6, 6, 7, 6, 4, 5, 8, 9, 8, 6, 8, 8, 8, 6, 9, 6, 8, 6, 7, 8, 7, 8, 10, 9, 7, 9, 11, 11, 10, 11, 12, 10, 10, 8, 16, 13, 12, 11, 9, 16, 18, 14, 14, 17, 19, 16, 19, 13, 17, 14, 14, 14, 14, 14, 17, 16, 15, 16, 16, 15, 25, 23, 22]

cp's OEIS Frontend

A055255 Number of even digits in 3^n.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	2
6	1
7	2
8	2
9	2
10	2
11	1
12	2
13	2
14	4
15	4
16	5
17	4
18	6
19	6
20	7
21	6
22	4
23	5
24	8
25	9
26	8
27	6
28	8
29	8
30	8
31	6
32	9
33	6
34	8
35	6
36	7
37	8
38	7
39	8
40	10
41	9
42	7
43	9
44	11
45	11
46	10
47	11
48	12
49	10
50	10
51	8
52	16
53	13
54	12
55	11
56	9
57	16
58	18
59	14
60	14
61	17
62	19
63	16
64	19
65	13
66	17
67	14
68	14
69	14
70	14
71	14
72	17
73	16
74	15
75	16
76	16
77	15
78	25
79	23
80	22

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	2
6	1
7	2
8	2
9	2
10	2
11	1
12	2
13	2
14	4
15	4
16	5
17	4
18	6
19	6
20	7
21	6
22	4
23	5
24	8
25	9
26	8
27	6
28	8
29	8
30	8
31	6
32	9
33	6
34	8
35	6
36	7
37	8
38	7
39	8
40	10
41	9
42	7
43	9
44	11
45	11
46	10
47	11
48	12
49	10
50	10
51	8
52	16
53	13
54	12
55	11
56	9
57	16
58	18
59	14
60	14
61	17
62	19
63	16
64	19
65	13
66	17
67	14
68	14
69	14
70	14
71	14
72	17
73	16
74	15
75	16
76	16
77	15
78	25
79	23
80	22

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	2
6	1
7	2
8	2
9	2
10	2
11	1
12	2
13	2
14	4
15	4
16	5
17	4
18	6
19	6
20	7
21	6
22	4
23	5
24	8
25	9
26	8
27	6
28	8
29	8
30	8
31	6
32	9
33	6
34	8
35	6
36	7
37	8
38	7
39	8
40	10
41	9
42	7
43	9
44	11
45	11
46	10
47	11
48	12
49	10
50	10
51	8
52	16
53	13
54	12
55	11
56	9
57	16
58	18
59	14
60	14
61	17
62	19
63	16
64	19
65	13
66	17
67	14
68	14
69	14
70	14
71	14
72	17
73	16
74	15
75	16
76	16
77	15
78	25
79	23
80	22