A266568 - cp's OEIS frontend

A266568 a(n) = smallest k such that 2^k ends in a string of exactly n nonzero digits.

n	a(n)
1	0
2	4
3	7
4	13
5	14
6	18
7	50
8	24
9	27
10	31
11	34
12	37
13	68
14	93
15	49
16	51
17	116
18	214
19	131
20	155
21	67
22	72
23	76
24	77
25	81
26	86
27	149
28	498
29	154
30	286
31	359
32	866
33	1225
34	329
35	664
36	129
37	573
38	176
39	655
40	820
41	571
42	434
43	1380
44	475
45	1260
46	2251
47	6015
48	3066
49	1738
50	2136
51	2297
52	432
53	665
54	229
55	1899

[0, 4, 7, 13, 14, 18, 50, 24, 27, 31, 34, 37, 68, 93, 49, 51, 116, 214, 131, 155, 67, 72, 76, 77, 81, 86, 149, 498, 154, 286, 359, 866, 1225, 329, 664, 129, 573, 176, 655, 820, 571, 434, 1380, 475, 1260, 2251, 6015, 3066, 1738, 2136, 2297, 432, 665, 229, 1899]

cp's OEIS Frontend

A266568 a(n) = smallest k such that 2^k ends in a string of exactly n nonzero digits.

Table of values

List of values