Weight distribution of [97,49,15] binary quadratic-residue (or QR) code.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =0a(11) =0a(12) =0a(13) =0a(14) =0a(15) =4656a(16) =23862a(17) =14841a(18) =65960a(19) =190120a(20) =741468a(21) =3375988a(22) =11662504a(23) =40893648a(24) =126088748a(25) =360406410a(26) =998048520a(27) =2614461952a(28) =6536154880a(29) =15589859400