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%I #3 Oct 15 2013 22:32:26
%S 1,10,105,1054,10540,105409,1054092,10540925,105409255,1054092553,
%T 10540925533,105409255338,1054092553389,10540925533894,
%U 105409255338945,1054092553389459,10540925533894597,105409255338945977
%N Integer part of the square root of [2n-1]-th decimal repunit.
%F a[n]=Floor[sqrt[(-1+10^[2n-1])/9]]]=Floor[sqrt[A002275(2n-1)]]
%e a[149] = 105409255338945992621035871466885843195271266221118708483580260692369866752
%Y Cf. A002275.
%K base,nonn
%O 1,2
%A _Labos Elemer_, Jun 24 2004
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