Weight distribution of [41,21,9] 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) =410a(10) =1312a(11) =3034a(12) =7585a(13) =16605a(14) =33210a(15) =60024a(16) =97539a(17) =146370a(18) =195160a(19) =232060a(20) =255266a(21) =255266a(22) =232060a(23) =195160a(24) =146370a(25) =97539a(26) =60024a(27) =33210a(28) =16605a(29) =7585