%I A070023
%S A070023 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,
%T A070023 75,80,90,96,100,120,125,128,144,150,160,180,192,200,225,240,250,256,
%U A070023 288,300,320,360,375,384,400,450,480,500,512,576,600,625,640,720,750
%N A070023 1/n has period 1 in base 10 (including terminating decimals).
%F A070023 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.
%e A070023 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...
%Y A070023 Cf. A003592, A069105, A070021, A070022.
%Y A070023 Sequence in context: A014866 A051661 A051037 this_sequence A035303 A018609 
               A029461
%Y A070023 Adjacent sequences: A070020 A070021 A070022 this_sequence A070024 A070025 
               A070026
%K A070023 base,nonn
%O A070023 1,2
%A A070023 Henry Bottomley (se16(AT)btinternet.com), Apr 12 2002