A266385 - cp's OEIS frontend

A266385 a(n) = floor(10^k/n) where k is the smallest integer such that the whole first period or the whole terminating fractional part of the decimal expansion of 1/n is shifted to appear before the decimal point in 10^k/n.

n	a(n)
1	1
2	5
3	3
4	25
5	2
6	16
7	142857
8	125
9	1
10	1
11	9
12	83
13	76923
14	714285
15	6
16	625
17	588235294117647
18	5
19	52631578947368421
20	5
21	47619
22	45
23	434782608695652173913
24	416
25	4
26	384615
27	37
28	3571428
29	344827586206896551724137931
30	3
31	32258064516129
32	3125
33	3
34	2941176470588235
35	285714
36	27

[1, 5, 3, 25, 2, 16, 142857, 125, 1, 1, 9, 83, 76923, 714285, 6, 625, 588235294117647, 5, 52631578947368421, 5, 47619, 45, 434782608695652173913, 416, 4, 384615, 37, 3571428, 344827586206896551724137931, 3, 32258064516129, 3125, 3, 2941176470588235, 285714, 27]

cp's OEIS Frontend

A266385 a(n) = floor(10^k/n) where k is the smallest integer such that the whole first period or the whole terminating fractional part of the decimal expansion of 1/n is shifted to appear before the decimal point in 10^k/n.

Table of values

List of values