Least positive integer whose square root starts with just n odd decimal digits.

Terms

a(0) =4a(1) =1a(2) =10a(3) =3a(4) =63a(5) =129a(6) =91a(7) =1123a(8) =249a(9) =384a(10) =3131a(11) =391a(12) =2823a(13) =14293a(14) =9996a(15) =100603a(16) =17260a(17) =140863a(18) =999960a(19) =39984a(20) =1837521a(21) =11289570a(22) =999996a(23) =26336742a(24) =3999840a(25) =15999968a(26) =29116075a(27) =26824089a(28) =366858085a(29) =308642