A055254 - cp's OEIS frontend

A055254 Number of odd digits in 2^n.

n	a(n)
0	1
1	0
2	0
3	0
4	1
5	1
6	0
7	1
8	1
9	2
10	1
11	0
12	1
13	2
14	2
15	2
16	3
17	4
18	1
19	1
20	3
21	4
22	3
23	1
24	5
25	5
26	2
27	5
28	3
29	5
30	5
31	3
32	4
33	6
34	7
35	7
36	6
37	8
38	5
39	7
40	9
41	8
42	6
43	4
44	6
45	6
46	6
47	8
48	7
49	9
50	6
51	8
52	9
53	9
54	8
55	8
56	11
57	10
58	10
59	7
60	8
61	10
62	7
63	9
64	10
65	10
66	7
67	12
68	13
69	13
70	12
71	6
72	7
73	12
74	10
75	15
76	16
77	12
78	12
79	10
80	12
81	13
82	10
83	14
84	14
85	12
86	16
87	13
88	11
89	13
90	12

[1, 0, 0, 0, 1, 1, 0, 1, 1, 2, 1, 0, 1, 2, 2, 2, 3, 4, 1, 1, 3, 4, 3, 1, 5, 5, 2, 5, 3, 5, 5, 3, 4, 6, 7, 7, 6, 8, 5, 7, 9, 8, 6, 4, 6, 6, 6, 8, 7, 9, 6, 8, 9, 9, 8, 8, 11, 10, 10, 7, 8, 10, 7, 9, 10, 10, 7, 12, 13, 13, 12, 6, 7, 12, 10, 15, 16, 12, 12, 10, 12, 13, 10, 14, 14, 12, 16, 13, 11, 13, 12]

cp's OEIS Frontend

A055254 Number of odd digits in 2^n.

Table of values

List of values

n	a(n)
0	1
1	0
2	0
3	0
4	1
5	1
6	0
7	1
8	1
9	2
10	1
11	0
12	1
13	2
14	2
15	2
16	3
17	4
18	1
19	1
20	3
21	4
22	3
23	1
24	5
25	5
26	2
27	5
28	3
29	5
30	5
31	3
32	4
33	6
34	7
35	7
36	6
37	8
38	5
39	7
40	9
41	8
42	6
43	4
44	6
45	6
46	6
47	8
48	7
49	9
50	6
51	8
52	9
53	9
54	8
55	8
56	11
57	10
58	10
59	7
60	8
61	10
62	7
63	9
64	10
65	10
66	7
67	12
68	13
69	13
70	12
71	6
72	7
73	12
74	10
75	15
76	16
77	12
78	12
79	10
80	12
81	13
82	10
83	14
84	14
85	12
86	16
87	13
88	11
89	13
90	12

n	a(n)
0	1
1	0
2	0
3	0
4	1
5	1
6	0
7	1
8	1
9	2
10	1
11	0
12	1
13	2
14	2
15	2
16	3
17	4
18	1
19	1
20	3
21	4
22	3
23	1
24	5
25	5
26	2
27	5
28	3
29	5
30	5
31	3
32	4
33	6
34	7
35	7
36	6
37	8
38	5
39	7
40	9
41	8
42	6
43	4
44	6
45	6
46	6
47	8
48	7
49	9
50	6
51	8
52	9
53	9
54	8
55	8
56	11
57	10
58	10
59	7
60	8
61	10
62	7
63	9
64	10
65	10
66	7
67	12
68	13
69	13
70	12
71	6
72	7
73	12
74	10
75	15
76	16
77	12
78	12
79	10
80	12
81	13
82	10
83	14
84	14
85	12
86	16
87	13
88	11
89	13
90	12

n	a(n)
0	1
1	0
2	0
3	0
4	1
5	1
6	0
7	1
8	1
9	2
10	1
11	0
12	1
13	2
14	2
15	2
16	3
17	4
18	1
19	1
20	3
21	4
22	3
23	1
24	5
25	5
26	2
27	5
28	3
29	5
30	5
31	3
32	4
33	6
34	7
35	7
36	6
37	8
38	5
39	7
40	9
41	8
42	6
43	4
44	6
45	6
46	6
47	8
48	7
49	9
50	6
51	8
52	9
53	9
54	8
55	8
56	11
57	10
58	10
59	7
60	8
61	10
62	7
63	9
64	10
65	10
66	7
67	12
68	13
69	13
70	12
71	6
72	7
73	12
74	10
75	15
76	16
77	12
78	12
79	10
80	12
81	13
82	10
83	14
84	14
85	12
86	16
87	13
88	11
89	13
90	12