A146075 - OEIS

%I #2 Mar 30 2012 16:51:01

%S 1,0,0,0,0,0,0,0,0,410,1312,3034,7585,16605,33210,60024,97539,146370,

%T 195160,232060,255266,255266,232060,195160,146370,97539,60024,33210,

%U 16605,7585,3034,1312,410,0,0,0,0,0,0,0,0,1

%N Weight distribution of [41,21,9] binary quadratic-residue (or QR) 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 9 410

%e 10 1312

%e 11 3034

%e 12 7585

%e 13 16605

%e 14 33210

%e 15 60024

%e 16 97539

%e 17 146370

%e 18 195160

%e 19 232060

%e 20 255266

%e 21 255266

%e 22 232060

%e 23 195160

%e 24 146370

%e 25 97539

%e 26 60024

%e 27 33210

%e 28 16605

%e 29 7585

%e 30 3034

%e 31 1312

%e 32 410

%e 41 1

%K nonn,fini,full

%O 0,10

%A _N. J. A. Sloane_, Apr 07 2009