A126209 - cp's OEIS frontend

A126209 Number of 7's in decimal expansion of 7^n.

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

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

cp's OEIS Frontend

A126209 Number of 7's in decimal expansion of 7^n.

Table of values

List of values

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

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

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