A137214 - cp's OEIS frontend

A137214 a(n) is the number of distinct decimal digits in 2^n.

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

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

cp's OEIS Frontend

A137214 a(n) is the number of distinct decimal digits in 2^n.

Table of values

List of values

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

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

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