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z(19,26) = 106

By deleting 12 rows and 5 columns from the finite projective plane of order 5.

lower bound = 106, submitted on April 28th, 2016 (link)

Searching for matrices of weight greater than 106, all scaffolds were eliminated without search.

upper bound = 106, submitted by Andrew Kay on April 27th, 2016 (link)

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