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Table of n, a(n) for n=1..24.
Select[Range, Length[Split[IntegerDigits[#, 16]]]==6&] (* Harvey P. Dale, Apr 17 2016 *)
Sequence in context: A253312 A253660 A253730 * A162893 A234089 A076247
Adjacent sequences: A043676 A043677 A043678 * A043680 A043681 A043682