A217180 - cp's OEIS frontend

A217180 a(n) is the number of digits in the decimal representation of the smallest power of n that contains five consecutive identical digits.

n	a(n)
2	67
3	131
4	67
5	88
6	176
7	146
8	95
9	131
10	6
11	163
12	44
13	253
14	225
15	255
16	67
17	290
18	98
19	148
20	7
21	138
22	179
23	255
24	174
25	131
26	163
27	158
28	31
29	239
30	8
31	60
32	67
33	242
34	160
35	170
36	176
37	32
38	316
39	327
40	9
41	192
42	231
43	190
44	148
45	240
46	260
47	228
48	63
49	146
50	9
51	64
52	107
53	206
54	148
55	159
56	188
57	250
58	71

[67, 131, 67, 88, 176, 146, 95, 131, 6, 163, 44, 253, 225, 255, 67, 290, 98, 148, 7, 138, 179, 255, 174, 131, 163, 158, 31, 239, 8, 60, 67, 242, 160, 170, 176, 32, 316, 327, 9, 192, 231, 190, 148, 240, 260, 228, 63, 146, 9, 64, 107, 206, 148, 159, 188, 250, 71]

cp's OEIS Frontend

A217180 a(n) is the number of digits in the decimal representation of the smallest power of n that contains five consecutive identical digits.

Table of values

List of values

n	a(n)
2	67
3	131
4	67
5	88
6	176
7	146
8	95
9	131
10	6
11	163
12	44
13	253
14	225
15	255
16	67
17	290
18	98
19	148
20	7
21	138
22	179
23	255
24	174
25	131
26	163
27	158
28	31
29	239
30	8
31	60
32	67
33	242
34	160
35	170
36	176
37	32
38	316
39	327
40	9
41	192
42	231
43	190
44	148
45	240
46	260
47	228
48	63
49	146
50	9
51	64
52	107
53	206
54	148
55	159
56	188
57	250
58	71

n	a(n)
2	67
3	131
4	67
5	88
6	176
7	146
8	95
9	131
10	6
11	163
12	44
13	253
14	225
15	255
16	67
17	290
18	98
19	148
20	7
21	138
22	179
23	255
24	174
25	131
26	163
27	158
28	31
29	239
30	8
31	60
32	67
33	242
34	160
35	170
36	176
37	32
38	316
39	327
40	9
41	192
42	231
43	190
44	148
45	240
46	260
47	228
48	63
49	146
50	9
51	64
52	107
53	206
54	148
55	159
56	188
57	250
58	71

n	a(n)
2	67
3	131
4	67
5	88
6	176
7	146
8	95
9	131
10	6
11	163
12	44
13	253
14	225
15	255
16	67
17	290
18	98
19	148
20	7
21	138
22	179
23	255
24	174
25	131
26	163
27	158
28	31
29	239
30	8
31	60
32	67
33	242
34	160
35	170
36	176
37	32
38	316
39	327
40	9
41	192
42	231
43	190
44	148
45	240
46	260
47	228
48	63
49	146
50	9
51	64
52	107
53	206
54	148
55	159
56	188
57	250
58	71