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%I #12 Mar 12 2020 03:07:42
%S 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4656,23862,14841,65960,190120,741468,
%T 3375988,11662504,40893648,126088748,360406410,998048520,2614461952,
%U 6536154880,15589859400,35337014640,76345991760,157463608005
%N Weight distribution of [97,49,15] binary quadratic-residue (or QR) code.
%C Taken from the Tjhai-Tomlinson web site.
%H Georg Fischer, <a href="/A069646/b069646.txt">Table of n, a(n) for n = 0..97</a>
%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> [broken link]
%H Trieu-Kien Truong, Yaotsu Chang and Chong-Dao Lee, <a href="https://doi.org/10.1109/TIT.2005.846383">The weight distributions of some binary quadratic residue codes</a>, IEEE Transactions on Information Theory, Issue 5, May-2005.
%e The weight distribution is:
%e i A_i
%e 0 1
%e 15 4656
%e 16 23862
%e 17 14841
%e 18 65960
%e 19 190120
%e 20 741468
%e 21 3375988
%e 22 11662504
%e 23 40893648
%e 24 126088748
%e 25 360406410
%e 26 998048520
%e 27 2614461952
%e 28 6536154880
%e 29 15589859400
%e 30 35337014640
%e 31 76345991760
%e 32 157463608005
%e 33 310186322386
%e 34 583880136256
%e 35 1050952990464
%e 36 1809974594688
%e 37 2983811972296
%e 38 4711282061520
%e 39 7127688680200
%e 40 10335148586290
%e 41 14368570181112
%e 42 19158093574816
%e 43 24503812839176
%e 44 30072861211716
%e 45 35419208941404
%e 46 40039105759848
%e 47 43447332367896
%e 48 45257637883225
%e 49 45257637883225
%e 50 43447332367896
%e 51 40039105759848
%e 52 35419208941404
%e 53 30072861211716
%e 54 24503812839176
%e 55 19158093574816
%e 56 14368570181112
%e 57 10335148586290
%e 58 7127688680200
%e 59 4711282061520
%e 60 2983811972296
%e 61 1809974594688
%e 62 1050952990464
%e 63 583880136256
%e 64 310186322386
%e 65 157463608005
%e 66 76345991760
%e 67 35337014640
%e 68 15589859400
%e 69 6536154880
%e 70 2614461952
%e 71 998048520
%e 72 360406410
%e 73 126088748
%e 74 40893648
%e 75 11662504
%e 76 3375988
%e 77 741468
%e 78 190120
%e 79 65960
%e 80 14841
%e 81 23862
%e 82 4656
%e 97 1
%K nonn,fini,full
%O 0,16
%A _N. J. A. Sloane_, Apr 11 2009
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