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A091536 Weight distribution of [89,45,17] binary quadratic-residue (or QR) code. 0

%I #3 Mar 30 2012 16:49:52

%S 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,54824,219296,626560,2192960,

%T 7462917,23067198,66429244,182680421,476804328,1173672192,2739870518,

%U 6066856147,12753805999,25507611998,48541216592

%N Weight distribution of [89,45,17] 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 17 54824

%e 18 219296

%e 19 626560

%e 20 2192960

%e 21 7462917

%e 22 23067198

%e 23 66429244

%e 24 182680421

%e 25 476804328

%e 26 1173672192

%e 27 2739870518

%e 28 6066856147

%e 29 12753805999

%e 30 25507611998

%e 31 48541216592

%e 32 87980955073

%e 33 151999782169

%e 34 250352582396

%e 35 393412044806

%e 36 590118067209

%e 37 845206560770

%e 38 1156598451580

%e 39 1512562040968

%e 40 1890702551210

%e 41 2259707219462

%e 42 2582522536528

%e 43 2822590555180

%e 44 2950890125870

%e 45 2950890125870

%e 46 2822590555180

%e 47 2582522536528

%e 48 2259707219462

%e 49 1890702551210

%e 50 1512562040968

%e 51 1156598451580

%e 52 845206560770

%e 53 590118067209

%e 54 393412044806

%e 55 250352582396

%e 56 151999782169

%e 57 87980955073

%e 58 48541216592

%e 59 25507611998

%e 60 12753805999

%e 61 6066856147

%e 62 2739870518

%e 63 1173672192

%e 64 476804328

%e 65 182680421

%e 66 66429244

%e 67 23067198

%e 68 7462917

%e 69 2192960

%e 70 626560

%e 71 219296

%e 72 54824

%e 89 1

%K nonn,fini

%O 0,18

%A _N. J. A. Sloane_, Apr 10 2009

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)