ZarankiewiczDB,

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z(22,28) = 126

Given by the density principle on z(21,28).

upper bound = 126, submitted on April 25th, 2016 (link)

By deleting 9 rows and 3 columns from the finite projective plane of order 5.

lower bound = 126, submitted on April 24th, 2016 (link)

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