The check matrix of a [20,15,5]₉.

10000148572738543384
01000132851326410134
00100123461235807637
00010111110000011568
00001000001111111111

The prime polynomial used to generate GF(9) is: X²+X-1. The element f=aX+b, a,b in {0,1,2}, is written as the number a*3+b.

The weight distribution:

A'₀= 1, A'₁₁= 16, A'₁₃= 32, A'₁₄= 800, A'₁₅= 3296, A'₁₆= 7144, A'₁₇= 11200, A'₁₈= 15648, A'₁₉= 16080, A'₂₀= 4832.

A₀= 1, A₅= 10784, A₆= 169632, A₇= 2743680, A₈= 35800064, A₉= 381848560, A₁₀= 3359455440, A₁₁= 24433114736, A₁₂= 146600991360, A₁₃= 721723617792, A₁₄= 2886892924480, A₁₅= 9238070284128, A₁₆= 23095157086392, A₁₇= 43473251109520, A₁₈= 57964328419024, A₁₉= 48812067637680, A₂₀= 19524826881376.

| Some codes | home |