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A032990 If d,e are consecutive digits of n in base 8, then |d-e|>=4. 1

%I

%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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Last modified May 23 10:05 EDT 2022. Contains 353975 sequences. (Running on oeis4.)