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z(27,30) = 160

By deleting four rows and one column from the finite projective plane of order 5.

lower bound = 160, submitted on April 23rd, 2016 (link)

Given by the convex optimisation bound with 20 columns of weight 5 and 10 columns of weight 6.

upper bound = 160, submitted on April 22nd, 2016 (link)

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