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A039609 Numbers whose base-12 representation has the same nonzero number of 1's and 7's. 0

%I #12 Oct 25 2023 11:39:52

%S 19,85,151,175,187,199,211,223,228,230,231,232,233,234,236,237,238,

%T 239,247,259,271,283,307,373,451,517,595,661,739,805,883,949,1009,

%U 1020,1022,1023,1024,1025,1026,1028,1029,1030,1031,1033,1045,1057

%N Numbers whose base-12 representation has the same nonzero number of 1's and 7's.

%t Select[Range[1200],DigitCount[#,12,1]==DigitCount[#,12,7]>0&] (* _Harvey P. Dale_, Oct 25 2023 *)

%K nonn,base,easy

%O 1,1

%A _Olivier GĂ©rard_

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Last modified April 19 02:45 EDT 2024. Contains 371782 sequences. (Running on oeis4.)