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A043787 Numbers n such that number of runs in base 3 representation of n is congruent to 2 mod 6. 1

%I #9 Mar 06 2022 13:15:22

%S 3,5,6,7,9,12,14,17,18,22,24,25,27,36,39,41,44,53,54,67,72,76,78,79,

%T 81,108,117,120,122,125,134,161,162,202,216,229,234,238,240,241,243,

%U 324,351,360,363,365,368,377,404,485,486,607,648

%N Numbers n such that number of runs in base 3 representation of n is congruent to 2 mod 6.

%H Harvey P. Dale, <a href="/A043787/b043787.txt">Table of n, a(n) for n = 1..5000</a>

%t Select[Range[700],Mod[Length[Split[IntegerDigits[#,3]]],6]==2&] (* _Harvey P. Dale_, Mar 06 2022 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified July 14 05:06 EDT 2024. Contains 374291 sequences. (Running on oeis4.)