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%I #10 Sep 03 2021 05:56:02
%S 1,10,100,1000,10000,100000,1000000,10000000,100000000,1000000000,11,
%T 10,110,1010,10010,100010,1000010,10000010,100000010,1000000010,101,
%U 110,100,1100,10100,100100,1000100,10000100,100000100,1000000100
%N Bit string encoding occurrence of digits of n in decimal representation: d-th bit is set iff d occurs in (n)10, 0 <= d < 10.
%F a(n) = A007088(A086066(n)).
%Y Cf. A007088, A086066.
%K nonn,base
%O 0,2
%A _Reinhard Zumkeller_, Jul 08 2003
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