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%I #11 Jul 01 2014 22:59:58
%S 5,4,3,2,1,0,5,6,5,5,5,4,5,3,5,2,5,1,5,0,4,6,4,5,4,4,4,3,4,2,4,1,4,0,
%T 3,6,3,5,3,4,3,3,3,2,3,1,3,0,2,6,2,5,2,4,2,3,2,2,2,1,2,0,1,6,1,5,1,4,
%U 1,3,1,2,1,1,1,0,0,6,0,5,0,4,0,3,0,2,0,1,0,0
%N Write n in base 7, then complement each digit (d -> 6-d) and juxtapose.
%t 6-Flatten[ IntegerDigits[ Range@50, 7]] (* _Robert G. Wilson v_, Jul 01 2014 *)
%K nonn,base
%O 1,1
%A _Clark Kimberling_