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A044632 Numbers n such that string 0,0 occurs in the base 9 representation of n but not of n+1. 0

%I #12 Feb 14 2014 07:44:37

%S 81,162,243,324,405,486,567,648,737,810,891,972,1053,1134,1215,1296,

%T 1377,1466,1539,1620,1701,1782,1863,1944,2025,2106,2195,2268,2349,

%U 2430,2511,2592,2673,2754,2835,2924,2997,3078,3159

%N Numbers n such that string 0,0 occurs in the base 9 representation of n but not of n+1.

%t Select[Range[3200],MemberQ[Partition[IntegerDigits[#,9],2,1],{0,0}] && !MemberQ[Partition[IntegerDigits[#+1,9],2,1],{0,0}]&] (* _Harvey P. Dale_, Jun 20 2011 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified April 23 11:35 EDT 2024. Contains 371912 sequences. (Running on oeis4.)