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%I #10 Sep 08 2022 08:44:29
%S 1,0,0,17296,535095,3995376,7681680,3995376,535095,17296,0,0,1
%N Weight distribution of binary [ 48,24,12 ] quadratic residue code.
%D F. J. MacWilliams and N. J. A. Sloane, The Theory of Error-Correcting Codes, Elsevier-North Holland, 1978, p. 494, 604.
%H 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 x^48 + 17296*x^36*y^12 + 535095*x^32*y^16 + 3995376*x^28*y^20 + 7681680*x^24*y^24 + 3995376*x^20*y^28 + 535095*x^16*y^32 + 17296*x^12*y^36 + y^48.
%o (Magma) C:=QRCode(GF(2),47); D:=ExtendCode(C); W<x,y>:=WeightEnumerator(D); W;
%K nonn,fini,full
%O 0,4
%A _N. J. A. Sloane_