%I #2 Mar 30 2012 17:26:35
%S 1,1,15,586,212,22485,68313,278874,623609,3082207
%N a(n) = smallest number m such that m^2 has exactly n decimal digits n.
%e a(0)=1 because 1^1=1 has zero 0's
%e a(1)=1 because 1^1=1 has one 1's
%e a(8)=623609 because 623609^2=388888184881 has eight 8's
%e a(9)=3082207 because3082207^2=9499999990849 has nine 9's.
%Y Cf. A086935
%K base,fini,full,nonn
%O 0,3
%A _Zak Seidov_, Jul 31 2010
