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A034979
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Smallest square starting with a string of n 1's.
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2
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1, 1156, 111556, 11115556, 111112681, 111111555556, 11111115555556, 1111111155555556, 111111111555555556, 11111111115555555556, 111111111113333185156, 11111111111122500004921, 11111111111115555555555556, 111111111111119590793871025, 11111111111111115805344390916, 11111111111111115805344390916, 111111111111111115889741773581604, 11111111111111111167337156002376484, 11111111111111111115555555555555555556, 1111111111111111111155555555555555555556
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OFFSET
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1,2
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LINKS
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FORMULA
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MAPLE
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f:= proc(n) local x, k, s;
x:= (10^n-1)/9;
for k from 0 do
s:= ceil(sqrt(10^k*x))^2;
if s < (x+1)*10^k then return s fi
od
end proc:
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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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More terms from Francisco Salinas (franciscodesalinas(AT)hotmail.com), Dec 23 2001
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STATUS
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approved
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