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A178505
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Decimal form of the period of 1/n for n such that gcd(n,10)=1. Leading zeros are suppressed.
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6
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3, 142857, 1, 9, 76923, 588235294117647, 52631578947368421, 47619, 434782608695652173913, 37, 344827586206896551724137931, 32258064516129, 3, 27, 25641, 2439, 23255813953488372093
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OFFSET
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1,1
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COMMENTS
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LINKS
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FORMULA
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EXAMPLE
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3 is in the sequence because 1/3 = 0.3333...
142857 is in the sequence because 1/7 = 0.142857 142857 ...
1 is in the sequence because 1/9 = 0.1111....
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MAPLE
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with(numtheory): nn:= 100: T:=array(1..nn):k:=1: U:=array(1..nn):k:=1: for n from 2 to 200 do:x:=1/n:for p from 1 to 200 while(irem(10^p, n)<>1 or gcd(n, 10)<> 1) do:od: if irem(10^p, n) = 1 and gcd(n, 10) = 1 then y:=floor(x*10^p): T[k]:=y: U[k]:=n : k:=k+1:else fi:od:print(T):
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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