A080477 - OEIS

%I #7 Mar 30 2012 16:49:38

%S 1,0,0,0,0,71862,38266515,6114942900,475562216745,18824858869630,

%T 397449398883096,4630515150103920,30531593455793640,

%U 116023986363853264,257257754706576192,335200293307691456

%N Weight distribution of [120,60,20] double circulant code.

%C Taken from the Tjhai-Tomlinson web site.

%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 The weight distribution is:

%e i A_i

%e 0 1

%e 20 71862

%e 24 38266515

%e 28 6114942900

%e 32 475562216745

%e 36 18824858869630

%e 40 397449398883096

%e 44 4630515150103920

%e 48 30531593455793640

%e 52 116023986363853264

%e 56 257257754706576192

%e 60 335200293307691456

%e 64 257257754706576192

%e 68 116023986363853264

%e 72 30531593455793640

%e 76 4630515150103920

%e 80 397449398883096

%e 84 18824858869630

%e 88 475562216745

%e 92 6114942900

%e 96 38266515

%e 100 71862

%e 120 1

%K nonn,fini

%O 0,6

%A _N. J. A. Sloane_, Apr 19 2009