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%I #10 Aug 10 2014 03:50:36
%S 1,2,3,4,5,6,7,13,14,15,22,23,31,32,40,41,48,49,50,56,57,58,59,104,
%T 105,112,113,114,120,121,122,123,176,177,178,184,185,186,187,248,249,
%U 250,251,260,261,262,263,324,325,326,327,333,334
%N If d,e are consecutive digits of n in base 8, then |d-e|>=4.
%H Vincenzo Librandi, <a href="/A032990/b032990.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Range[500],Min[Abs[Differences[IntegerDigits[#,8]]]]>3&] (* _Harvey P. Dale_, Aug 09 2014 *)
%K nonn,base
%O 1,2
%A _Clark Kimberling_
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