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A044569 Numbers n such that string 0,1 occurs in the base 8 representation of n but not of n+1. 0

%I #9 Nov 21 2013 12:47:03

%S 65,129,193,257,321,385,449,513,527,577,641,705,769,833,897,961,1025,

%T 1039,1089,1153,1217,1281,1345,1409,1473,1537,1551,1601,1665,1729,

%U 1793,1857,1921,1985,2049,2063,2113,2177,2241,2305

%N Numbers n such that string 0,1 occurs in the base 8 representation of n but not of n+1.

%t ok018Q[n_]:=MemberQ[Partition[IntegerDigits[n,8],2,1],{0,1}] && !MemberQ[Partition[IntegerDigits[n+1,8],2,1],{0,1}]; Select[Range[2500],ok018Q] (* _Harvey P. Dale_, Feb 04 2011 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified February 23 17:43 EST 2024. Contains 370283 sequences. (Running on oeis4.)