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%I #11 Aug 08 2019 17:24:32
%S 0,1,2,4,9,38,304,2433,38938,2492040,318981139,163318343502
%N a(n) is the least nonnegative number whose binary digits do not appear in order (not necessarily consecutively) in the concatenation of the binary representations of all previous terms.
%C This sequence is a variant of A118248.
%C a(13) > 4.5*10^12. - _Giovanni Resta_, Aug 08 2019
%Y See A308540 for the decimal variant.
%Y Cf. A118248.
%K nonn,base,hard,more
%O 1,3
%A _Rémy Sigrist_, Jul 24 2019
%E a(12) from _Giovanni Resta_, Aug 08 2019
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