The check matrix of a [18,13,5]₇.

The generator matrix of a [18,5,12]₇.

100021001350433162
010010023501331412
001000215013314362
000102100135143312
000011111111111101

The weight distribution:

A'₀= 1, A'₁₂= 576, A'₁₃= 1392, A'₁₄= 2760, A'₁₅= 2688, A'₁₆= 5142, A'₁₇= 3396, A'₁₈= 852.

A₀= 1, A₅= 4848, A₆= 52392, A₇= 520704, A₈= 4393092, A₉= 29125800, A₁₀= 157486032, A₁₁= 686795904, A₁₂= 2404642320, A₁₃= 6657811632, A₁₄= 14267829720, A₁₅= 22827879168, A₁₆= 25681609026, A₁₇= 18128140908, A₁₈= 6042718860.

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