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A044559 Numbers n such that string 5,5 occurs in the base 7 representation of n but not of n+1. 0

%I #7 Jan 28 2024 13:35:38

%S 40,89,138,187,236,286,334,383,432,481,530,579,629,677,726,775,824,

%T 873,922,972,1020,1069,1118,1167,1216,1265,1315,1363,1412,1461,1510,

%U 1559,1608,1658,1706,1755,1804,1853,1902,1951,2008

%N Numbers n such that string 5,5 occurs in the base 7 representation of n but not of n+1.

%t SequencePosition[Table[If[SequenceCount[IntegerDigits[n,7],{5,5}]>0,1,0],{n,2100}],{1,0}][[;;,1]] (* _Harvey P. Dale_, Jan 28 2024 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)