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%I #11 Jun 30 2021 01:56:00
%S 39,60,103,124,167,188,231,252,263,271,279,287,303,311,312,313,314,
%T 315,317,318,359,380,423,444,452,460,468,476,480,481,482,483,485,486,
%U 492,500,551,572,615,636,679,700,743,764,775,783,791,799,815,823,824
%N Numbers whose base-8 representation has the same nonzero number of 4's and 7's.
%Y Cf. A007094.
%K nonn,base,easy
%O 1,1
%A _Olivier Gérard_
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