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%I #21 Oct 04 2019 09:09:42
%S 4,15,18,20,23,29,33,34,35,36,38,39,43,48,49,50,54,56,60,62,63,66,68,
%T 69,74,75,77,78,81,83,84,86,88,89
%N Numbers n such that A308803(2n+1) = (2*10^n-1)(5*10^n+1).
%C A308803(2n+1) >= (2*10^n-1)(5*10^n+1) for all n. This sequence lists the values of n where this lower bound is attained.
%Y Cf. A308803
%K nonn,base,more
%O 1,1
%A _Chai Wah Wu_, Sep 30 2019
%E a(14)-a(34) from _Chai Wah Wu_, Oct 03 2019
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