Weight distribution of [ 31,16,7 ] binary BCH and quadratic-residue codes.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =155a(8) =465a(9) =0a(10) =0a(11) =5208a(12) =8680a(13) =0a(14) =0a(15) =18259a(16) =18259a(17) =0a(18) =0a(19) =8680a(20) =5208a(21) =0a(22) =0a(23) =465a(24) =155a(25) =0a(26) =0a(27) =0a(28) =0a(29) =0