A126206 - cp's OEIS frontend

A126206 Number of 4's in the decimal expansion of 4^n.

n	a(n)
0	0
1	1
2	0
3	1
4	0
5	1
6	1
7	1
8	0
9	2
10	1
11	3
12	0
13	1
14	2
15	2
16	2
17	1
18	1
19	3
20	0
21	3
22	3
23	3
24	2
25	2
26	2
27	3
28	1
29	2
30	2
31	3
32	4
33	3
34	1
35	3
36	3
37	4
38	2
39	4
40	2
41	4
42	2
43	2
44	3
45	4
46	3
47	3
48	3
49	3
50	2
51	2
52	3
53	5
54	2
55	4
56	2
57	4
58	4
59	3
60	3
61	3
62	4
63	4
64	6
65	5
66	5
67	4
68	2
69	9
70	5
71	2
72	4
73	6
74	4
75	7
76	4
77	2
78	5
79	4
80	3
81	4
82	8
83	4
84	7
85	9
86	2
87	8
88	4
89	7
90	3
91	10
92	9
93	5
94	3
95	5
96	8
97	8
98	3
99	10
100	4

[0, 1, 0, 1, 0, 1, 1, 1, 0, 2, 1, 3, 0, 1, 2, 2, 2, 1, 1, 3, 0, 3, 3, 3, 2, 2, 2, 3, 1, 2, 2, 3, 4, 3, 1, 3, 3, 4, 2, 4, 2, 4, 2, 2, 3, 4, 3, 3, 3, 3, 2, 2, 3, 5, 2, 4, 2, 4, 4, 3, 3, 3, 4, 4, 6, 5, 5, 4, 2, 9, 5, 2, 4, 6, 4, 7, 4, 2, 5, 4, 3, 4, 8, 4, 7, 9, 2, 8, 4, 7, 3, 10, 9, 5, 3, 5, 8, 8, 3, 10, 4]

cp's OEIS Frontend

A126206 Number of 4's in the decimal expansion of 4^n.

Table of values

List of values

n	a(n)
0	0
1	1
2	0
3	1
4	0
5	1
6	1
7	1
8	0
9	2
10	1
11	3
12	0
13	1
14	2
15	2
16	2
17	1
18	1
19	3
20	0
21	3
22	3
23	3
24	2
25	2
26	2
27	3
28	1
29	2
30	2
31	3
32	4
33	3
34	1
35	3
36	3
37	4
38	2
39	4
40	2
41	4
42	2
43	2
44	3
45	4
46	3
47	3
48	3
49	3
50	2
51	2
52	3
53	5
54	2
55	4
56	2
57	4
58	4
59	3
60	3
61	3
62	4
63	4
64	6
65	5
66	5
67	4
68	2
69	9
70	5
71	2
72	4
73	6
74	4
75	7
76	4
77	2
78	5
79	4
80	3
81	4
82	8
83	4
84	7
85	9
86	2
87	8
88	4
89	7
90	3
91	10
92	9
93	5
94	3
95	5
96	8
97	8
98	3
99	10
100	4

n	a(n)
0	0
1	1
2	0
3	1
4	0
5	1
6	1
7	1
8	0
9	2
10	1
11	3
12	0
13	1
14	2
15	2
16	2
17	1
18	1
19	3
20	0
21	3
22	3
23	3
24	2
25	2
26	2
27	3
28	1
29	2
30	2
31	3
32	4
33	3
34	1
35	3
36	3
37	4
38	2
39	4
40	2
41	4
42	2
43	2
44	3
45	4
46	3
47	3
48	3
49	3
50	2
51	2
52	3
53	5
54	2
55	4
56	2
57	4
58	4
59	3
60	3
61	3
62	4
63	4
64	6
65	5
66	5
67	4
68	2
69	9
70	5
71	2
72	4
73	6
74	4
75	7
76	4
77	2
78	5
79	4
80	3
81	4
82	8
83	4
84	7
85	9
86	2
87	8
88	4
89	7
90	3
91	10
92	9
93	5
94	3
95	5
96	8
97	8
98	3
99	10
100	4

n	a(n)
0	0
1	1
2	0
3	1
4	0
5	1
6	1
7	1
8	0
9	2
10	1
11	3
12	0
13	1
14	2
15	2
16	2
17	1
18	1
19	3
20	0
21	3
22	3
23	3
24	2
25	2
26	2
27	3
28	1
29	2
30	2
31	3
32	4
33	3
34	1
35	3
36	3
37	4
38	2
39	4
40	2
41	4
42	2
43	2
44	3
45	4
46	3
47	3
48	3
49	3
50	2
51	2
52	3
53	5
54	2
55	4
56	2
57	4
58	4
59	3
60	3
61	3
62	4
63	4
64	6
65	5
66	5
67	4
68	2
69	9
70	5
71	2
72	4
73	6
74	4
75	7
76	4
77	2
78	5
79	4
80	3
81	4
82	8
83	4
84	7
85	9
86	2
87	8
88	4
89	7
90	3
91	10
92	9
93	5
94	3
95	5
96	8
97	8
98	3
99	10
100	4