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The check matrix of a [20,15,5]₈.

The generator matrix of a [20,5,14]₈.

10000641604271154766
01000246065371436534
00100220321374543427
00010103121365127352
00001011111111111111

The prime polynomial used to generate GF(8) is: X³+X²+1. The element f=aX²+bX+c, a,b,c in {0,1}, is written as the number a*4+b*2+c.

The weight distribution:

A'₀= 1, A'₁₄= 1155, A'₁₅= 2457, A'₁₆= 4305, A'₁₇= 6930, A'₁₈= 8575, A'₁₉= 7525, A'₂₀= 1820.

A₀= 1, A₅= 9387, A₆= 139755, A₇= 1941555, A₈= 22141665, A₉= 206970855, A₁₀= 1592501911, A₁₁= 10134972575, A₁₂= 53211586155, A₁₃= 229209441825, A₁₄= 802247687745, A₁₅= 2246279474649, A₁₆= 4913745537330, A₁₇= 8093223829005, A₁₈= 9442095683965, A₁₉= 6957333446805, A₂₀= 2435066723649.

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