Weight distribution of [73,37,13] 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) =1533a(14) =6570a(15) =19272a(16) =69861a(17) =266085a(18) =827820a(19) =2292200a(20) =6188940a(21) =15841584a(22) =37443744a(23) =82642716a(24) =172172325a(25) =337713987a(26) =623471976a(27) =1086405418a(28) =1784808901a(29) =2766489030