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A179895 a(n) = smallest number m such that m^2 has exactly n decimal digits n. 1
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 * A232291 A294834 A276489

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 February 15 16:25 EST 2019. Contains 320136 sequences. (Running on oeis4.)