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A079807 Number of multiples of 3 that can be formed by permuting the digits of n. 1

%I #9 Apr 22 2019 14:00:33

%S 1,0,0,1,0,0,1,0,0,1,0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,1,

%T 0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,1,0,

%U 0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,2,0,0,1,0,0,6,0,0

%N Number of multiples of 3 that can be formed by permuting the digits of n.

%H Harvey P. Dale, <a href="/A079807/b079807.txt">Table of n, a(n) for n = 0..1000</a>

%e a(12) = 2: (12,21)

%t Table[Count[FromDigits/@Permutations[IntegerDigits[n]],_?(Divisible[ #,3]&)],{n,0,110}] (* _Harvey P. Dale_, Apr 22 2019 *)

%Y Cf. A079806.

%K base,easy,nonn

%O 0,13

%A _Amarnath Murthy_, Feb 06 2003

%E More terms from _Sam Alexander_, Feb 26 2005

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Last modified April 19 07:23 EDT 2024. Contains 371782 sequences. (Running on oeis4.)