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A039217 Numbers whose base-12 representation has the same number of 0's and 8's. 2


%S 1,2,3,4,5,6,7,9,10,11,13,14,15,16,17,18,19,21,22,23,25,26,27,28,29,

%T 30,31,33,34,35,37,38,39,40,41,42,43,45,46,47,49,50,51,52,53,54,55,57,

%U 58,59,61,62,63,64,65,66,67,69,70,71,73,74,75,76,77,78,79,81

%N Numbers whose base-12 representation has the same number of 0's and 8's.

%H Vincenzo Librandi, <a href="/A039217/b039217.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Range[200], DigitCount[#, 12, 8] == DigitCount[#, 12, 0] &] (* _Harvey P. Dale_, Apr 24 2011 *)

%o (MAGMA) [n: n in [1..100] | Multiplicity(S,0) eq Multiplicity(S,8) where S is {*d: d in Intseq(n,12)*}]; // _Bruno Berselli_, Oct 20 2012

%K nonn,base,easy

%O 1,2

%A _Olivier Gérard_

%E An incorrect g.f. was deleted by _N. J. A. Sloane_, Sep 13 2009

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Last modified December 9 06:07 EST 2021. Contains 349627 sequences. (Running on oeis4.)