A306305 - cp's OEIS frontend

A306305 Smallest number m such that 2^m*n has 2 or more identical adjacent decimal digits or -1 if no such m exists.

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

[16, 15, 11, 14, 17, 10, 4, 13, 4, 16, 0, 9, 7, 3, 12, 12, 5, 3, 12, 15, 4, 0, 7, 8, 2, 6, 11, 2, 2, 11, 5, 11, 0, 4, 5, 2, 5, 11, 7, 14, 9, 3, 3, 0, 5, 6, 2, 7, 8, 1, 9, 5, 6, 10, 0, 1, 1, 1, 1, 10, 1, 4, 4, 10, 8, 0, 5, 3, 3, 4, 4, 1, 4, 4, 2, 10, 0, 6, 7, 13]

cp's OEIS Frontend

A306305 Smallest number m such that 2^m*n has 2 or more identical adjacent decimal digits or -1 if no such m exists.

Table of values

List of values

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

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

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