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Square roots of the terms in A080160.
1

%I #8 Aug 19 2019 02:56:44

%S 1,2,3,4,5,6,7,8,9,18,21,24,27,30,33,36,45,48,51,54,57,60,63,72,73,74,

%T 75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,99,102,105,108,111,

%U 114,117,126,129,132,135,138,141,144,153,154,155,156,157,158,159,160

%N Square roots of the terms in A080160.

%p b:=n->sum(convert(((10^(n+1)-1)/9)^2,base,10)[j],j=1..2*n+1): a:=proc(n) if type(sqrt(b(n)), integer)=true then sqrt(b(n)) else fi end:seq(a(n),n=0..2000); # _Emeric Deutsch_, Jun 19 2005

%Y Cf. A080160.

%K nonn,base

%O 1,2

%A _N. J. A. Sloane_, Jun 19 2005

%E More terms from _Emeric Deutsch_, Jun 19 2005