Search: id:A028384
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%I A028384
%S A028384 1,0,0,0,0,0,0,0,0,0,0,4324,12972,0,0,178365,356730,0,0,
%T A028384 1664740,2330636,0,0,3840840,3840840,0,0,2330636,1664740,
%U A028384 0,0,356730,178365,0,0,12972,4324,0,0,0,0,0,0,0,0,0,0,1
%N A028384 Weight distribution of [ 47,24,11 ] binary quadratic-residue code.
%D A028384 F. J. MacWilliams and N. J. A. Sloane, The Theory of Error-Correcting 
               Codes, Elsevier-North Holland, 1978, p. 494.
%H A028384 C. J. Tjhai and Martin Tomlinson, <a href="http://www.tech.plym.ac.uk/
               Research/fixed_and_mobile_communications/links/weightdistributions.htm">
               Weight Distributions of Quadratic Residue and Quadratic Double Circulant 
               Codes over GF(2)</a>
%e A028384 x^47 + 4324*x^36*y^11 + 12972*x^35*y^12 + 178365*x^32*y^15 + 356730*x^31*y^16 
               +
%e A028384 1664740*x^28*y^19 + 2330636*x^27*y^20 + 3840840*x^24*y^23 + 3840840*x^23*y^24 
               +
%e A028384 2330636*x^20*y^27 + 1664740*x^19*y^28 + 356730*x^16*y^31 + 178365*x^15*y^32 
               +
%e A028384 12972*x^12*y^35 + 4324*x^11*y^36 + y^47.
%o A028384 (MAGMA) C:=QRCode(GF(2),47); W<x,y>:=WeightEnumerator(C); W;
%Y A028384 Sequence in context: A055153 A145312 A008409 this_sequence A107542 A145916 
               A048900
%Y A028384 Adjacent sequences: A028381 A028382 A028383 this_sequence A028385 A028386 
               A028387
%K A028384 nonn,fini,full
%O A028384 0,12
%A A028384 N. J. A. Sloane (njas(AT)research.att.com).

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