Search: id:A071053
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%I A071053
%S A071053 1,3,3,5,3,9,5,11,3,9,9,15,5,15,11,21,3,9,9,15,9,27,15,33,5,15,15,
%T A071053 25,11,33,21,43,3,9,9,15,9,27,15,33,9,27,27,45,15,45,33,63,5,15,15,
%U A071053 25,15,45,25,55,11,33,33,55,21,63,43,85,3,9,9,15,9,27,15,33,9,27,27
%N A071053 Number of 1's in n-th row of triangle in A071036.
%C A071053 Number of odd coefficients in (x^2+x+1)^n - Benoit Cloitre (benoit7848c(AT)orange.fr), 
               Sep 05 2003
%D A071053 S. Wolfram, A New Kind of Science, Wolfram Media, 2002; Chapter 3.
%H A071053 T. D. Noe, <a href="b071053.txt">Table of n, a(n) for n=0..1024</a>
%H A071053 S. R. Finch, P. Sebah and Z.-Q. Bai, <a href="http://arXiv.org/abs/0802.2654">
               Odd Entries in Pascal's Trinomial Triangle</a> (arXiv:0802.2654)
%H A071053 T. Sillke, <a href="http://www.mathematik.uni-bielefeld.de/~sillke/PUZZLES/
               trinomials">odd trinomials: t(n) = (1+x+x^2)^n</a>
%H A071053 <a href="Sindx_Ce.html#cell">Index entries for sequences related to cellular 
               automata</a>
%F A071053 [(a(n)-1)/4] mod 2 = A020987(n). - R. Stephan, Mar 18 2004
%Y A071053 Sequence in context: A015909 A029620 A048691 this_sequence A094439 A122037 
               A008316
%Y A071053 Adjacent sequences: A071050 A071051 A071052 this_sequence A071054 A071055 
               A071056
%K A071053 nonn
%O A071053 0,2
%A A071053 Hans Havermann (pxp(AT)rogers.com), May 26 2002

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