

A070023


1/n has period 1 in base 10 (including terminating decimals).


6



1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 32, 36, 40, 45, 48, 50, 60, 64, 72, 75, 80, 90, 96, 100, 120, 125, 128, 144, 150, 160, 180, 192, 200, 225, 240, 250, 256, 288, 300, 320, 360, 375, 384, 400, 450, 480, 500, 512, 576, 600, 625, 640, 720, 750
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OFFSET

1,2


LINKS

Table of n, a(n) for n=1..61.


FORMULA

a(n) =A070022(n)/11. Numbers of the form a*b*c where a is in {1, 3, 9}, b is a power of 2 and c is a power of 5.


EXAMPLE

12 is in the sequence since 1/12=0.08333333333...; 11 is not since 1/11=0.0909090909...; 10 is in, since 1/10=0.1000000...=0.099999999...


CROSSREFS

Cf. A003592, A069105, A070021, A070022.
Sequence in context: A051037 A250089 A257997 * A035303 A291719 A018609
Adjacent sequences: A070020 A070021 A070022 * A070024 A070025 A070026


KEYWORD

base,nonn


AUTHOR

Henry Bottomley, Apr 12 2002


STATUS

approved



