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 A179895 a(n) = smallest number m such that m^2 has exactly n decimal digits n. 2
 1, 1, 15, 586, 212, 22485, 68313, 278874, 623609, 3082207 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Table of n, a(n) for n=0..9. EXAMPLE a(0)=1 because 1^1=1 has zero 0's a(1)=1 because 1^1=1 has one 1's a(8)=623609 because 623609^2=388888184881 has eight 8's a(9)=3082207 because3082207^2=9499999990849 has nine 9's. CROSSREFS Cf. A086935 Sequence in context: A001236 A263887 A183546 * A343074 A232291 A294834 Adjacent sequences: A179892 A179893 A179894 * A179896 A179897 A179898 KEYWORD base,fini,full,nonn AUTHOR Zak Seidov, Jul 31 2010 STATUS approved

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Last modified March 1 16:12 EST 2024. Contains 370442 sequences. (Running on oeis4.)