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 A180019 Difference of sums of digits of n in decimal and in ternary representation. 5

%I

%S 0,0,0,2,2,2,4,4,4,8,-1,-1,1,1,1,3,3,3,7,7,-2,0,0,0,2,2,2,8,8,8,1,1,1,

%T 3,3,3,7,7,7,9,0,0,2,2,2,6,6,6,8,8,-1,1,1,1,7,7,7,9,9,9,2,2,2,6,6,6,8,

%U 8,8,10,1,1,5,5,5,7,7,7,9,9,0,8,8,8,10,10,10,12,12,12,7,7,7,9,9,9,11,11,11

%N Difference of sums of digits of n in decimal and in ternary representation.

%C a(n) = A007953(n) - A053735(n);

%C a(A037315(n)) = 0;

%C a(A011557(n)) = 1 - A053735(A011557(n));

%C a(A000244(n)) = A007953(A000244(n)) - 1;

%C a(A002283(n)) = A008591(n) - A053735(A002283(n));

%C a(A024023(n)) = A007953(A024023(n)) - 2*n.

%H R. Zumkeller, <a href="/A180019/b180019.txt">Table of n, a(n) for n = 0..10000</a>

%H <a href="/index/Coi#Colombian">Index entries for Colombian or self numbers and related sequences</a>

%Y Cf. A180017, A180018, A007089.

%K base,sign

%O 0,4

%A _Reinhard Zumkeller_, Aug 06 2010

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Last modified March 31 19:37 EDT 2020. Contains 333151 sequences. (Running on oeis4.)